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SKU: DCS-12V-50Ah
DCS 12v 50ah (Lithium)

safe

Ultra-Safe

Explosion-proof / No leakage

stable

Stable

Low Internal Resistance / Proven Stability

long

Long Life

Ultra-long cycle life

guarentee

Guaranteed A Grade

Contracted A Grade cell supply

DCS Batteries are the ideal replacement & upgrade from AGM, Gel or other lead-acid batteries for any application. DCS gives you the ability to upgrade your current batteries to lithium-ion technology that can deliver a minimum of 2500 cycles and has tremendous advantages in weight, performance, reliability and service life compared to traditional lead-acid batteries.

Backed by a 4 year warranty.

Availability: Out Of Stock

Original price was: $695.00.Current price is: $650.00.

Available on back-order

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All DCS batteries now feature our comprehensive Bluetooth System available on both Android and Apple operating systems shows a lot of cool things.

  • Cell status showing real-time cell balancing operation
  • BMS MOSFET temperature (great info when you are winching or running a large inverting load or your trolling motor to know how hard you are pushing the electronics).
  • SOC% estimate (using impedance tracking – the App learns the SOC after the first 10 cycles)
  • Battery pack voltage and cycle count
  • Amp meter – showing charge and discharge current
  • Connectivity distance up to 10m
  • Now there is no need to install battery monitors or shunts in boats, campers or vehicles. You have all the info you need at your fingertips.
  • The SOC estimate is accurate on single batteries, the more batteries that are expanded in parallel, the less accurate the SOC becomes.
  • This free application provides the perfect tell-tale about the battery packs’ state of health as it ages
  • Assists installers & integrators to quickly diagnose any system issues

DCS 6AWG 230mm Parallel Cables with M8 Ring Terminals

300x300

Click Here for more information

Specifications:
Nominal Voltage 12.8V
Nominal Capacity (1Hr) 50Ah
Case Dimensions (L x W x H) 198mm x 166mm x 170mmlif
Weight 5.3 Kg
Cycling voltage 11.5 ~ 14.6V
Charge voltage 14.0 ~ 14.6V
Float Voltage 13.5 ~ 13.7V
Maximum Charge Current 50A
Recommended Charging Current ≤35A
Maximum Discharge Current 50A
DCS BMS (internal) DCS active cell management system, over/under voltage, over current charge/discharge, low/high temperature protections, satisfies the AS/NZS 3001.2:2022 lithium battery standards
Cell Chemistry DCS 3.2V 5.0 – 7.2Ah Cylindrical (LiFePO4)
Cycle Performance 2500 Cycles @ 100% DOD ≥ 80% Capacity Retention @ 25°C
LCA 250A (not suitable for starting passenger vehicles)
Ingress Protection IP54
Case ABS (flame retardant plastic)
Operating temp Range -25 to +80 degrees C
Terminals Top Mount M8 Stainless steel 316/ Copper
Parallel Connections Up To 10
Series Connections YES
Warranty 4 years | 3 years under bonnet
Certifications UN 38.3, UL 1642, IEC 62133 & 62619, CE

DCS Lithium Battery Safety & Reliability

DCS High Performance 2C Charge & Discharge Curves

DOWNLOAD APP (DCS LFP)

DCS Bluetooth Technology powered by DCS LFP, this APP is only for DCS LFP batteries which is based on BLE 4.0 technology. Every DCS battery pack comes standard with our detailed battery monitoring via Bluetooth.

This App provides comprehensive monitoring for DCS LFP batteries, including:

  • SOC%
  • Time Remaining
  • Battery pack voltage, Power & Current
  • Battery Management MOSFET temperature
  • Individual Cell Status with balancing indicators.
  • Connectivity distance up to 10 meters.
  • Every DCS battery pack comes standard with our detailed battery monitoring via Bluetooth

Learn More About the DCS LFP APP

Click Here to Watch the App Overview Video

Discover the Efficiency of Our 12v 50ah Lithium Battery. Designed for Endurance, Our 50ah Deep Cycle Battery Is Perfect for Extensive Usage.

12v 50ah lithium batteryDeep cycle batteries offer better performance as compared to the traditional lead-acid battery. Deep cycle batteries offer far more reliability as they are durable. Deep cycle batteries are easily maintained while delivering power efficiently. Deep cycle batteries come in different sizes and configurations depending upon the usage. These batteries can power up anything from a marine boat to an RV. 12v 50ah lithium battery powers smaller gadgets and devices depending upon the size of the battery.Deep Cycle Systems is an experienced battery provider, especially for deep cycle batteries. Our deep cycle batteries are built with years of research and development. Therefore Deep Cycle System is an experienced battery provider for the best quality deep cycle batteries. Our batteries can withstand harsh weather conditions while delivering maximum performance. Deep Cycle Systems is a market leader for providing high-quality deep cycle batteries.

Why are Deep Cycle Batteries Superior?

Deep cycle batteries give out constant power. Whereas the traditional starter battery only provides peak voltages during cranking. Henceforth, deep cycle batteries are suitable for applications in demand of constant power. Deep cycle batteries function as a marathon runner, which means they give out a lesser amount of power as compared to a starter battery, but the power is delivered in more time. Therefore, deep cycle batteries work seamlessly for operations that require a long period of power.

Deep cycle batteries are applicable in usage for the following applications.

  • Golf cart power for longer and efficient usage.
  • Used in floor cleaning machines for constant power.
  • Scissor lifts being operated by electricity in bigger malls and residential areas.
  • Powering up forklifts.
  • Provide power to recreational vehicles.
  • Deep cycle batteries are used in trolling motors of the boat.
  • Deep cycle batteries are used in navigational devices of small and larger boats.
  • Deep cycle batteries provide clean and green renewable energy as compared to fossil fuel energy. Henceforth, it is good for the environment.

Deep cycle batteries are known to work great in multiple applications. However, some key factors make the deep cycle batteries far greater than the traditional lead-acid batteries.

Lithium Deep Cycle Battery For Extended Lifespan and Deep Discharge

The use of a power battery for storing electricity is significant as you can draw the current for connected loads when required without any disruption. The battery packs are helpful to phase out the scenario of power failure due to any reason. These batteries store electricity as direct current, and you need an inverter to convert the stored current into a compatible version, i.e., alternate current. There are many storage batteries in the market that have some unique features that make them stand alone from others. The lead-acid battery was the initial shape we got about 160 years ago; however, a lithium 50ah deep cycle battery is known as a heavy-duty battery pack to mitigate the issues of older versions.

Use of Power Battery

Battery packs increase efficiency in any case. The urban residents mostly use a power battery as a backup option in case of any likely power breakouts or grid failure. Typically they need a UPS or an inverter to manage the power management and conversation of DC to AC supply. The battery banks are also part of renewable energy sources, i.e., wind turbines and solar systems, to store extra produced energy for either peak hours or for non-solar production hours.

50ah deep cycle batteryTypes of Power Battery

Power batteries are available in different modes with certain edges over others. Following are the main types of power batteries:

Lead-Acid Battery

Lead-Acid has the honour of the earliest storage battery serving for over a century and a half. It uses distilled acid water which is injected via its vents which becomes hectic for some people as if you didn’t fill it timely, it would become dead. The price of a flooded-acid battery is lower than others, which is a considerable advantage; however, it lacks the features of a dry battery. Typically, you would get at the most two-year life span from a lead-acid battery. A lead-acid battery has a fifty-percent discharge rating, which means you can draw only 50 ampere-hours from a 100 ampere-hour lead-acid battery. In short, you will get a half return on your investment.

Dry Cell Battery

Dry cell battery is the improved version of lead-acid battery, also known as gel battery. The dry cell deep cycle battery is suitable when you want a longer lifespan and a reliable power storage container.

Efficient working

We have already discussed earlier that deep cycle batteries are good for the constant provision of efficient power during usage. Deep cycle batteries are strong when put through the test, hence the reason these batteries are widely being adopted.

Easy to Maintain

A typical deep cycle battery needs nowhere near as much maintenance as a traditional lead-acid battery. Deep cycle batteries do not require active maintenance like a lead-acid battery. Henceforth they last for a longer amount of time.

Increased Durability

A 50ah lithium battery is much more stable in opposition to a normal car battery. Henceforth, it is much more durable as compared to other battery options, especially in the case of starter batteries. Deep Cycle batteries also have an increased ability to hold the charge and prevent discharge. Henceforth, they are more durable and reliable.

Why buy from Deep Cycle Systems?

Deep Cycle Systems is a prestigious energy solution provider. We have been in the business of providing our valuable customers with top-notch energy solutions products. Our ever-extending list of products includes inverters, solar systems, lithium batteries, solar batteries, solar panels, and deep cycle batteries. Deep Cycle Systems is committed to providing our valued customers with products at affordable prices. In addition, we offer expert installations to make our product buying and using experience seamless. Deep cycle systems believe in durable and reliable power solutions for our customers.

50 Amp Hour Deep Cycle BatteryLithium Ion 50 Amp Hour Deep Cycle Battery Can Be Discharged at 2C Rate

Deep Cycle Systems (DCS) introduces a high-performance Lithium Ion 50 Amp Hour Deep Cycle Battery, capable of being discharged at a 2C rate. This feature signifies the battery’s ability to be discharged at twice its capacity, meaning it can provide a 100 Amp output for a shorter duration. This high discharge rate is beneficial for applications that require a quick, powerful burst of energy. The 50 Amp hour battery from DCS is designed to meet the demands of high-drain devices and applications, offering robust power in a compact form.

50 Amp Hour Deep Cycle Battery – High Power Output for Demanding Applications

The 2C discharge rate capability of the DCS Lithium Ion 50 Amp Hour Deep Cycle Battery makes it exceptionally suitable for demanding applications that require a high power output in a short period. This feature provides users with the flexibility to power high-drain devices efficiently, ensuring reliable performance when it matters most.

12v 50ah Lithium Ion Battery12v 50ah Lithium Ion Battery – Get 2000 – 12000 Life Cycles

DCS’s 12v 50ah Lithium Ion Battery stands out with its impressive lifespan, offering between 2000 and 12000 life cycles. This extensive range is indicative of the battery’s durability and the quality of its construction. The long life cycle ensures that the battery will provide a reliable power source over many years, making it a cost-effective investment in the long run. It’s an ideal choice for users looking for a dependable and long-lasting battery solution for their energy needs.

Long-Term Reliability and Cost-Effectiveness

The extensive life cycle range of the 12v 50ah Lithium Ion Battery from DCS translates to long-term reliability and reduced replacement costs. Users benefit from a sustainable power solution that maintains its efficiency over numerous charge and discharge cycles. This longevity is particularly advantageous for applications where frequent battery replacements are impractical or costly.

12 Volt 50ah Lithium Battery50 Amp Lithium Battery Design is Known for Its Super Low Internal Cell Resistance

The design of the 50 Amp Lithium Battery from Deep Cycle Systems is renowned for its super low internal cell resistance. This low resistance is key to the battery’s high efficiency, as it minimizes energy loss during charging and discharging. The result is a more efficient transfer of energy, better performance, and reduced heat generation. This design feature makes the battery ideal for a wide range of applications, especially those requiring efficient and consistent power delivery.

Enhanced Efficiency and Performance

The super low internal cell resistance of DCS’s 50 Amp Lithium Battery enhances its overall performance and efficiency. This low resistance ensures that the battery can deliver its stored energy more effectively, providing a stable and reliable power source. It’s an essential attribute for users who require efficient energy management and consistent power delivery in their applications.

12 Volt 50ah Lithium Battery – Connect Up to 10 50Ah Batteries in Parallel Without Any External Communication System

Deep Cycle Systems (DCS) presents their versatile 12 Volt 50ah Lithium Battery, designed for seamless scalability. Users can connect up to 10 of these 50Ah batteries in parallel without the need for an external communication system. This feature offers significant flexibility in expanding power capacity, catering to larger energy requirements without complicated setups. The ability to parallel-connect these batteries effortlessly is a testament to DCS’s commitment to providing user-friendly, scalable power solutions. It’s ideal for applications ranging from home energy storage to commercial power systems, where scalable energy solutions are essential.

Effortless Expansion for Increased Power Needs

The capability to connect multiple 12 Volt 50ah Lithium Batteries in parallel from DCS allows users to scale up their power systems easily. This parallel connectivity feature is especially beneficial in scenarios where energy demands may increase over time. It provides a straightforward way to enhance power capacity, ensuring that the energy system can grow with the user’s needs.

50ah Battery Lithium50ah Lithium Ion Battery Has the Highest Charge Efficiency Rate of 98%

DCS’s 50ah Lithium Ion Battery sets a high standard with its remarkable charge efficiency rate of 98%. This efficiency rate is among the highest in the industry, ensuring that almost all the energy used to charge the battery is effectively stored and available for use. Such a high charge efficiency minimizes energy loss, making the battery more economical and environmentally friendly. It’s an ideal choice for users seeking an efficient and sustainable power storage solution.

Maximizing Energy Utilization

The 98% charge efficiency rate of the 50ah Lithium Ion Battery from DCS signifies how effectively it utilizes energy. This high level of efficiency ensures that users get the most out of their energy input, making the battery highly suitable for applications where energy conservation and efficiency are priorities.

50ah Battery Lithium – Know About Battery State of Health with DCS LFP App

The 50ah Battery Lithium from Deep Cycle Systems comes with an added advantage – the ability to monitor the battery’s state of health through the DCS LFP App. This application allows users to keep track of various aspects of the battery’s performance and condition, such as charge levels, health status, and remaining lifespan. Having access to this information is crucial for maintaining the battery’s efficiency and prolonging its life. It offers users a comprehensive understanding of their battery’s status, facilitating informed maintenance and usage decisions.

Comprehensive Battery Monitoring at Your Fingertips

With the DCS LFP App, monitoring the state of health of the 50ah Battery Lithium becomes convenient and user-friendly. This digital tool enhances the user experience by providing vital information about the battery’s performance and health through a simple app interface. It empowers users to manage their batteries more effectively, ensuring optimal performance and longevity.

50 Ah Lithium Batteries50 Ah Lithium Batteries – Monitor and Control Battery with DCS LFP App

Deep Cycle Systems (DCS) enhances user experience with their 50 Ah Lithium Batteries, integrated with the innovative DCS LFP App for monitoring and control. This app allows users to seamlessly track and manage their battery’s performance directly from their smartphones. It provides real-time data on charge levels, usage patterns, and overall battery health, enabling efficient and informed battery management. This feature is particularly useful for users who need to keep a close eye on their power systems, ensuring their batteries are operating optimally at all times.

Enhanced User Interaction for Efficient Power Management

The integration of the DCS LFP App with the 50 Ah Lithium Batteries allows for enhanced user interaction, making power management more accessible and effective. Users can actively control and monitor their battery, adapting usage to maximize efficiency and lifespan. It represents a significant step forward in battery technology, combining high-performance power storage with smart, user-friendly features.

50ah Battery Deep CycleDCS Lithium 50Ah Battery Deep Cycle can be Stored @ 25 C without Losing its Capacity

The DCS Lithium 50Ah Battery Deep Cycle is designed for exceptional stability and is able to be stored at 25 degrees Celsius without losing its capacity. This stability in storage conditions is a significant advantage for users who may not require constant use of the battery. It ensures that the battery maintains its charge over extended periods of inactivity, ready to deliver full power when needed. This feature makes the DCS 50Ah battery highly reliable and convenient for a variety of applications, including seasonal or backup power systems.

Reliable Performance Even in Prolonged Storage

DCS’s Lithium 50Ah Battery’s ability to retain its capacity at a stable storage temperature of 25 C ensures that it remains reliable over long storage periods. This reliability is crucial for users who need a battery that can be stored without frequent maintenance or worry about capacity degradation. It’s an ideal choice for systems where the battery may not be in regular use but needs to be ready to perform when required.

50ah Deep CycleDCs 50Ah Deep Cycle – Operating Temperature Range is -25 to +80 degrees C

DCS’s 50Ah Deep Cycle battery boasts a wide operating temperature range, functioning efficiently between -25 to +80 degrees Celsius. This broad range of temperature tolerance is indicative of the battery’s robustness and adaptability to various environmental conditions. Whether used in colder climates or in hot, demanding environments, the DCS 50Ah battery ensures consistent performance and reliability. This adaptability makes it an excellent choice for a wide range of applications, including outdoor, marine, and industrial settings, where temperature fluctuations are common.

Adaptable Power Solution for Extreme Conditions

The wide operating temperature range of the DCS 50Ah Deep Cycle battery makes it a highly adaptable power solution for extreme conditions. It provides users with the assurance that their battery will function efficiently, regardless of the surrounding temperature. This versatility is a key aspect of DCS’s commitment to delivering high-quality, reliable power solutions that meet diverse user needs.

Li Ion 12v 50ahLi Ion 12v 50Ah – Fast and Efficient Charging than Other Battery Chemistries

The Li Ion 12v 50Ah battery from Deep Cycle Systems (DCS) sets itself apart with its fast and efficient charging capabilities, surpassing other battery chemistries in performance. Lithium-ion technology enables quicker charge times compared to traditional lead-acid or AGM batteries, meaning less downtime and more usage. This efficiency is crucial for users who need a quick turnaround, such as in industrial, recreational, or emergency scenarios. DCS’s focus on rapid charging technology ensures that their batteries are not just powerful but also time-efficient, catering to the modern needs of energy storage.

Maximizing Time Efficiency with Advanced Charging

The advanced charging capabilities of the Li Ion 12v 50Ah battery make it a standout choice for applications requiring frequent or quick recharging. This feature enables users to get back to their tasks quicker, offering a practical solution in fast-paced environments. It’s an embodiment of DCS’s commitment to providing efficient and user-friendly power solutions.

DCS Li Ion 50Ah Batteries Have No Memory Effect like Lead-Acid or AGM Batteries

DCS’s Li Ion 50Ah batteries are engineered to eliminate the memory effect, a common issue with traditional lead-acid or AGM batteries. The memory effect refers to the reduction in battery capacity when repeatedly charged after being only partially discharged. The lithium-ion chemistry of DCS’s 50Ah batteries ensures they maintain their full capacity over time, regardless of their charge-discharge cycles. This feature is particularly beneficial for users who require consistent battery performance and longevity without the need for full discharge before recharging.

Li Ion 50ahConsistent Performance Without Capacity Degradation

The absence of memory effect in DCS’s Li Ion 50Ah batteries means they deliver consistent performance without capacity degradation. Users can charge the batteries at their convenience without worrying about long-term capacity loss. This reliability is a significant advantage in maintaining efficient energy systems and underscores the superiority of lithium-ion technology in modern power storage solutions.

Li Ion Battery 50Ah – Get A Battery That Passed the MIL Vibration Testing Standards

The Li Ion Battery 50Ah from Deep Cycle Systems is not only efficient and reliable but also robust, having passed the rigorous MIL vibration testing standards. This certification indicates the battery’s resilience to physical stress, especially vibrations, making it suitable for use in demanding environments where durability is key. The MIL-standard vibration testing ensures that the battery can withstand the rigours of transport, industrial applications, and other challenging scenarios. DCS’s dedication to producing batteries that meet such high durability standards reflects their commitment to quality and reliability.

Durability in Demanding Environments

Passing the MIL vibration testing standards, the DCS Li Ion Battery 50Ah offers exceptional durability, capable of operating reliably in demanding environments. This resilience is particularly valuable for applications in mobile settings, outdoor use, or in conditions where mechanical stress is prevalent. Users can trust in the robustness of DCS’s batteries, ensuring uninterrupted power in even the toughest conditions.

Call Us

Deep Cycle Systems is an Australian-based energy solution provider. We have top-notch energy solutions, including solar panels, true sine wave inverters, heavy-duty battery banks, solar battery chargers, MPPT charge controllers, and solar accessories. Give us a call at 1300 597 327 to order our high-precision compact solar products for your home or work.

Battery User Guide

Battery Installation Locations

DCS Batteries that are in a sealed traditional style battery case are IP rated 54 unless otherwise specified.

As there is a considerable amount of electronics inside the battery cases, it is important that these batteries are protected from the ingress of particles and water.

IP54 means that there is partial protection against dust & similar particles & protection against splashing water from any direction for a minimum of 10 minutes.
IP54 MEANS THE BATTERIES ARE NOT WATERPROOF

Our DCS Slimline battery range is IP rated to 53 unless otherwise specified.
IP53 means that there is partial protection against dust & similar particles & protection against splashing water up to 60 degrees from the vertical with limited ingress permitted for 3 minutes.
IP53 MEANS THE BATTERIES ARE NOT WATERPROOF.

DCS batteries should be installed and operated in a location that will not exceed the specified operating temperatures.

Make yourself aware of the new requirements that relate to battery storage, IP ratings and venting. Australian / New Zealand Standards (AS/NZS 3001.2:2022)

Do Not

  • Install DCS batteries underneath a vehicle or caravan, or any other external location that is exposed to the atmosphere unless it is fully contained inside a suitable battery housing that will prevent the ingress of particles & or water. Also, sufficient mechanical / structural protection is needed to prevent damage from rocks and debris during recreational vehicle travel.
  • Pressure wash or hose your batteries. You can wipe them down with a damp cloth if needed.
  • Submerge your batteries in any fluids.
  • Install DCS batteries near high heat sources, e.g. exhaust manifolds or turbo chargers.

Operating Temperatures

Each battery has a designated operating temperature range depending on the cell type used.
Our under bonnet Hybrid battery range (using cylindrical cells) is designed to work in ambient temperatures between -30°C to 110°C. Do not operate outside of this temperature range.

Our 12V 180Ah auxiliary batteries have an operating temperature range of -30°C to 60°C. The DCS BMS will not allow these batteries to operate if the 60°C is exceeded.

The DCS BMS will not allow a frozen Battery that is below 0 degrees Celsius to be charged. Charge will only be allowed when the ambient temperature of the battery cell is back above 0°C.
Discontinue the use of a battery immediately if the battery becomes excessively warm whilst in a resting/standby state.

Please check the specifications for the recommended operating temperatures of your particular battery on the DCS website.

www.deepcyclesystems.com.au

Securing your battery

Your battery must be secured to prevent movement. Restraints must prevent any movement under a pulling force of twice the battery weight.

The recommended hold-down bracket torque is 4 N-m. or 3.5 lb-ft.

Care has to be taken to prevent the battery lid seal/gasket from deforming when securing the battery, which could affect the IP rating of the battery.    Do Not over-tighten the battery holding clamps.  

Battery Charging

Use only approved Lithium-Iron Phosphate specific chargers for your battery’s nominal voltage, chemistry and maximum charge rate with the correct charging stage voltages.

All DCS 12V cylindrical cell packs to be charged at:

14.4V  Bulk

13.5V  Float

The DCS 12V 180ah Auxiliary prismatic cell pack (SKU: DCS-12V-180ah) to be charged at:

14.2V Bulk

13.5V Float

Be aware some chargers have fixed charging voltages and cannot be adjusted.

Check the charger specifications for charging voltage levels & charging profiles before purchasing.

Alternator Charging

Our under-bonnet dual battery systems, 80ah Extreme & Slimline range, can be charged directly from the vehicle’s alternator, providing that they are the only battery chemistry being charged.

For example, you cannot parallel a Lithium battery to a lead acid battery and charge from the alternator.

This type of set up has to be separated by using a DC-DC Charger.

If you are parallel connecting batteries together, they have to be the same chemistry, nominal voltage, capacity and age.

Each battery has a maximum charge current listed in the specifications table that should not be exceeded; otherwise, permanent damage could be done to the battery.

When the batteries are parallel connected together, this doubles the amount of current the batteries can be charged at.

For example, our DCS 180ah (2 x 90ah ) dual battery system. The maximum charge current is 80 Amps per battery. So 2 x 80A = 160 Amps. This means you can charge these batteries provided your alternator’s max. output does not exceed 160Amps.

Before choosing a battery, check the maximum output current your alternator can produce and also find out the Cold Cranking Amps (CCA) needed to start your vehicle.

Your factory alternator is generally the best alternator to use, and there is no need for high output aftermarket alternators.

Check the specifications table on the DCS website for the particular battery you are interested in, and look for Lithium Cranking Amps (LCA).

If the LCA meets or exceeds the CCA for your particular vehicle, then the battery is suitable for your vehicle.

Parallel Connected Batteries

Connect Battery 1 Positive to Battery 2 Positive

Connect Battery 1 Negative to Battery 2 Negative ( This cable is extremely important as some vehicles use the chassis as a negative link, which is prone to failing due to corrosion, which causes a high resistance. )

In Balance Wiring

When you have batteries that are wired in parallel, as described above, it is good practice to wire your loads and inputs in balance.

What this means is, for example, to connect loads & inputs positive to the first battery e.g. Battery 1 and the negative loads & inputs to the last parallel connected battery e.g. Battery 2.

This is important when using an inverter that can have a high current draw so that they evenly draw from the parallel connected batteries.

Storage

If you are not going to be using the battery for some time, charge the battery fully to a 100% state of charge using the correct charging profile and voltages.

Disconnect everything off the battery terminals, and it can be left in this state for up to 3 months.

After 3 months, cycle the battery, fully discharge the battery (11.5 volts), then fully charge the battery, and the battery can then be left in this state for another 3 months.

Do Not

  • Use a lead acid charger / maintainer on a Lithium battery.

DCS LFP App

Every DCS LFP battery pack comes standard with detailed battery monitoring information via Bluetooth. (BLE 4.0 Technology)

The app can be downloaded to Android or iOS devices that are Bluetooth enabled.

Comprehensive battery monitoring information for DCS LFP batteries include

  • SOC%. (State Of Charge)
  • Battery pack voltage, Current & Power
  • Time Remaining
  • Individual Cell Voltage Status
  • Battery Management MOSFET temperature
  • Connectivity distance up to 10 metres.

Renaming Your Batteries Using The App 

  • Open the DCS LFP app and connect to the battery.
  • Tap on the three horizontal lines on the top right hand corner of the screen.
  • Input Password. 736263   >  OK
  • Name ………… > OK
  • Refresh the battery list by tapping the circular arrow.
  • Select custom and your battery will now appear in this section.

Modifications

Do not attempt to alter, modify or repair any part of the battery.

Any modifications to the battery will void your warranty.

Fully Discharged Battery

The BMS will emergency open the circuit of the battery terminals to protect the cells. Typically, you will see 3 - 4 volts across the battery terminals when using a multimeter. The BMS needs a 12V supply with at least 1A of current to release and wake up from a cell emergency protection state.

Most mains chargers with a lithium profile will do a slow recovery charge, as will most solar regulators. Some chargers on the market today that are advertised as ‘lithium’ compatible still don’t have the firmware to do a slow recovery charge to release BMSs. If you have a charger that will not wake up the BMS, the easiest way to wake it up is to connect an unregulated solar panel directly to the battery terminals; however, ensure all loads are disconnected before you do this. Having said that, every system should have a suitable low cut-off voltage to shutdown loads/accessories so that the batteries are not fully drained.

“Batteries cannot be left flat/empty; if the low voltage cutoff is triggered, the battery pack should be fully charged as soon as possible. If access to a suitable charger is not possible, disconnect all loads from the battery terminals. The warranty will be void if the battery pack has been left in a low voltage cutoff state for longer than 14 days.”

The most important thing is to isolate everything from the battery terminals, as cables/loads connected to the terminals cause more power drain as the FET gates have to remain closed to cull the accessory standby loads connected to the battery pack + offset BMS standby power consumption.

Incorrect State of Charge Due to a Synchronisation issue:

The state of charge is a calculated value by the BMS and will need to be reset (synchronised) every now and then.

The synchronisation process is automatic and is performed each time the battery is fully charged. The battery monitor (BMS) determines that the battery is fully charged when all 3 "charged" conditions have been met. The "charged" conditions for 12V batteries is:

Charged Voltage (> 14.0 Voltage)

Tail current (4% of battery capacity)

Charge detection time (1 minute)

Electrical Installations Standard  ( AS/NZS 3001 . 2 : 2022 ) For Transportable Structures which includes Recreational Vehicles, Caravans etc.

Please note AS/NZS 3001 is made mandatory by electrical legislation in each state and territory.

The new standard includes requirements for “connectable electrical installation batteries” covering any battery that is installed with the primary purpose of supplying the living / accommodation features of a transportable structure, which includes recreational vehicles and caravans etc.

Below is a brief summary of some of the new requirements.

Lithium - Ion Batteries

  • The location must be appropriate to ensure that the battery operates within the manufacturer’s defined operating temperatures and IP rating.
  • Batteries must be located in a position that prevents any vented gases from entering a habitable area of the recreational vehicle. Any vented gases have to be vented externally from the vehicle. ventilation openings have a minimum vent area requirement, which is calculated based on the ratings of the battery. Any opening into the interior (habitable area) must be provided with an air seal.
  • Any metallic service lines (eg. Gas, Diesel, Water etc.) located near the battery must be at least 300mm. clear of the battery terminals or must be shielded with dielectric material to prevent against short circuits.
  • A battery must be secured to prevent movement. Restraints must prevent any movement under a pulling force of twice the battery weight.

FAQ

Lithium Ferrophosphate (LFP) is a flame retardant, stable, safe and proven cell chemistry that has a very good energy density around 325 Wh/L. This cell chemistry can be engineered for various applications by adjusting the ratio of elements to provide high performance characteristics. E.g. the DCS marine battery range runs 2C cells, which means our little 75Ah battery will discharge comfortably at 75Ah x 2C = 150A. The DCS 80Ah Extreme runs 10C cells which means the 80A can comfortably discharge at 80Ah x 10C = 800A but is of course limited to lower currents due the the Battery Management System.

LFP also has very good cycling durability between 2,000 ~ 12,000 cycles can be achieved depending on how well the cells are managed, and the lowest rate of capacity loss (aka greater calendar-life) compared to other lithium cell chemistries.

Battery cells are simply a bunch of resistors with the ability to store energy. A 100Ah battery pack has a different resistance characteristic compared to a 50Ah battery pack, that theoretical difference in resistance is 2:1. So if you connect a 100Ah battery in parallel to a 50Ah battery there is no way for these two batteries to equalise and therefore you can’t charge them correctly. So for example connecting a 60Ah calcium starting battery to a 120Ah AGM via a VSR (Voltage Sensing Relay) you cannot charge both batteries correctly and from that day onwards you are prematurely destroying both battery packs. Same theory applies with lithium’s it’s still a battery pack.

What’s the solution? A DC-DC charger, you now have a permanent point of isolation (meaning that both batteries are never connected to each other in parallel). The DC-DC charger takes the surplus power from battery A (engine) and chargers battery B (aux/house). This device now allows any battery capacity and or chemistry to be used.

Yes you can, but lithium’s have a different voltage curve, so you would still need to use a programmable VSR to dial them in correctly. You would also need to ensure the batteries are programmed to never exceed a 10%SOC variance, any larger and you risk damaging the BMS's. These devices also draw a lot of power when engaged to so it’s best to run the two batteries in permanent parallel and run a load disconnect instead of a VSR.

Lithium battery cells have a super low resistance so are very easy to charge and very efficient. This level of efficiency means you can charge them at very high C rates. For example if you look at the charge rate of a 100Ah AGM battery the recommended charging current will be around 25A, which is a 0.25C charge rate. If you consider the DCS 12V 100Ah Lithium battery it can be charged at up to 70A which is a 0.70C charge rate. This means you no longer need to consider DC-DC chargers as you can connect our batteries directly to high power charging devices such as suitable alternators, or large buck boosters. For example our popular dual 90Ah battery system for boats and 4WD vehicles, can be connected to alternators up to 160A.

Because our batteries are internally voltage regulated and because our BMS has such a high sustainable peak discharge current they will do an amazing job of equalising very quickly.

The BMS will emergency open circuit the battery terminals to protect the cells. This means there is no longer any resistance in the system. The BMS needs a 12V supply with at least 1A of current to release and wakeup from a cell emergency protection state.

Most mains chargers with a lithium profile will do a slow recovery charge as will most solar regulators. Some chargers on the market today that are advertised as ‘lithium’ compatible still don’t have the firmware to do a slow recovery charge to release BMS’s. If you have a charger that will not wakeup the BMS, easiest way to wake it up is to connect a unregulated solar panel directly to the battery terminals, ensure all loads are disconnected before you do this. Having said that every system should have a suitable low cut off voltage to shutdown loads/accessories so that the batteries are not fully drained.

"Batteries cannot be left flat/empty, if the low voltage cutoff is triggered the battery pack should be fully charged as soon as possible. If access to a suitable charger is not possible, disconnect all loads from the battery terminals. The warranty will be void if the battery pack has been left in a low voltage cutoff state for longer than 14 days."

Most important thing is to isolate everything from the battery terminals, as cables/loads connected to the terminals causes more power drain as the FET gates have to remain closed to cull the accessory standby loads connected to the battery pack + offset BMS standby power consumption.

Use the following settings:

Charged voltage 14.0V
Tail current 4%
Charged detection time 1min
Peukert 1.05
Charge efficiency 98%
Current threshold 0.1A
C rates: refer to the battery pack capacity

Fully charge to 100% isolate everything from the terminals and leave for max 3 months and then cycle (fully discharge and fully charge) and leave again for 3 months etc…. Minimum 4 cycles per year to not effect the cells capacity.

The reason many factory batteries fall over after 9/12 months is because modern/smart alternators typically drop the alternators voltage output to 13.5/13.6V. This voltage is not high enough to charge wet/calcium/lead acid batteries so from the getgo they are destined to fail prematurely. They are typically under charged to around ~80%SOC at these voltages.

So what happens when DCS Hybrid batteries are connected to smart alternators? Exactly the same thing they get charged to around the same 80%SOC. However because LFP has no memory effect that's perfectly fine. By only charging to 80% you are further improving the service life of our batteries. It's no not necessary to charge our batteries over 80%SOC. The only advantage is that you give the BMS a chance to detect full charge voltage and calibrate the SOC readout. So try to plug into mains once a week to fully charge your batteries, especially if your not running any fixed solar supply.

All DCS 12V cylindrical cell packs can be charged as follows:

Bulk: 14.4V
Float: 13.5V

The DCS 12V 180Ah Auxiliary prismatic cell packs (SKU: DCS-12V-180Ah) need to be charged as follows:

Bulk: 14.2V
Float: 13.5V

When the battery pack is discharged down to 11.50V the BMS resets to 0%SOC and now is placed in a relearning state - the pack must be fully charged continuously without stopping to calibrate again. Charge it on a mains charger to 14.60V.

Depending on the usage pattern, best to fully cycle the batteries once every 3 months to give the cells a refresh. To fully cycle a 12V pack discharge to 11.50V and charge to 14.60V.

BMS & CMS

Here at DCS, designing lithium batteries is not only our bread and butter, but we love this safe, stable, robust, and high-performance cell chemistry so much that we decided to develop our own range of Battery and Cell Management Systems in 2015.

DCS Battery Management System:

What was the objective? Well, the reason we embarked on this project was that all the basic Chinese designed BMS’s are just protection boards, and it is hard to call them a BMS when they don’t do any cell balancing or provide any means of programmability for various parameters and cell control. A lot of Battery Management Systems that we have tested were using inferior PCB engineering design techniques and poor components. That means continuous performance above 100A was more or less impossible, and reliability was also questionable when pushing above 100A with those Battery Management Systems.

Our key BMS objective was to develop a high-performance 200A BMS that could do;

  • 200A continuous operations using high-quality components
  • To have a minimal increase in temperature at peak output current (as these circuit boards are installed inside battery packs, limiting internal heat build-up that is crucial for the longevity of the battery cells).
  • Designed for engine cranking applications, it has to deliver a minimum of 1200LCA’s for 10 seconds (because of the limited voltage drop with suitable lithium cells, it’s very easy to crank over modern engines. Most engines will start in under 1sec, so 10 seconds is plenty). CCA’s don’t apply to lithium batteries as this standard was developed for lead-acid batteries and needed to deliver 30 secs of cranking amps. When a lithium battery is controlled via a BMS, the correct terminology is LCA = Lithium Cranking Amps based on delivering 10 secs of cranking amps.
  • Suitable for high temperatures applications, e.g. engine compartments. It will be stable up to 180 degrees C.
  • Bluetooth and WiFi connectivity in order to develop a comprehensive app platform
  • Pass MIL vibration testing standards (to open up the development of batteries for just about any application).

In a nutshell, the design needed to be tough and reliable for those who use them in the field with no room for error. The construction materials, coating and surfaces, assembly techniques are critical in designing a reliable system. After submitting our brief to all major leading manufacturers in Europe, Japan, USA and Korea, we assessed their expertise and ended up working with a leading and well known Japanese semiconductor manufacturer.

This is a typical Chinese 100A 4S BMS design

This is the DCS 4S 200A BMS

After three years of development, in early 2018, we were satisfied with the circuit board stress testing and released the first batch of our newly developed BMS’s right across our entire 4S (12V) & 16S (48V) battery range. At the same time, we hired an app development team to start working on the software integration to launch our first app platform. The first GEN1 BLE DCS BMS’s that featured Bluetooth chips were launched in OCT 2019. The app platform required a lot of tweaking both on the hardware and software front, and our GEN2 BMS’s were released in mid-2020 along with a more stable app platform with a new design scheme. Our latest GEN3 BLE BMS’s had been released in JAN 2021. The accuracy and stability of the DCS LFP App monitoring system is now very mature and refined. Some additional features had been added along with the ability to create custom battery names. We can produce our DCS BMS technology in any continuous rating range from 10A to 200A with our comprehensive BLE DCS LFP App platform.

DCS Cell Management System:

Having developed such an industry-leading and reliable BMS, it made no sense to combine the cell balancing system together with the BMS. So with our many years of experience in designing and maintaining lithium batteries, we have developed a stand-alone CMS to compliment our BMS. CMS? What? OK, so there are two ‘theories’ of cell balancing in the lithium world passive and active. Passive balancing is a cheap inferior method of cell management as it can burn resistors in an attempt to bleed cell strings. In contrast, active cell balancing is a more complex and efficient balancing technique that redistributes charge between battery cells during the charge and discharge cycles.

Passive balancing has two fundamental setbacks;

  1. Heat: We don’t want unnecessary heat build-up inside a battery pack. The less internal heat, the lesser the impact on the battery cells over time
  2. Resistors have a limited service life, and once they fail game over, you have no cell management. But more importantly, they can fail in such a way in which they will keep drawing power and eventually destroy the cells.

Active balancing is the only way to manage lithium cells correctly. There are many ways to design an integrated circuit (IC) to actively manage cell strings. At DCS, we have tested well over 10 different methods of active balancing IC’s over the years and, in the end, again decided to develop our own active management circuit boards with the best-combined techniques based on our stress testing. Our in house PCB design engineer Max, designed our circuit boards to again meet the following criteria:

  • High current movement (our latest boards now achieve 3.7A dynamic movement per channel)
  • Thermal management to ensure the boards remain reliable in harsh environments
  • Be able to withstand maximum current and thermal loads to ensure long term reliability
  • Fail-safe design, if any component fails, it won’t compromise the battery pack (not consume power from the battery cells)

This is the DCS 16 channel CMS

There are, of course, some other software features and parameters, which we can’t disclose on this page to the public, as well as some very fancy hardware. But what our latest 04 channel and 16 channel CMS’s do is they can easily manage up to 1000Ah battery banks. So, for example, if you wanted to use our 16 channel CMS’s you could run a 51.2V 1000Ah single battery pack, which would be 51.2kWh in size! The DCS 15kWh batteries are just shy of 300Ah in capacity, so one can only imagine the tight CMS control these batteries are under, and that’s why we back them with a 10 year / 80% capacity warranty.

The DCS 16 channel 59.2A active cell balancing system is so powerful that it will change the battery storage market forever. With this system, the lithium market will continue to dominate for the foreseeable future. Of course, all DCS batteries now feature both our BMS & CMS circuit boards.

We design all our own PCB hardware and the circuit boards are tested to withstand a minimum of 10 years of severe abuse. This video is the MIL-STD 810G Method 514.6 which includes 4 procedures for different modes of vibration.

How to wire batteries correctly