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SKU: DCS-12V-200Ah-Victron
12V 200Ah + Victron Smart 100/20A MPPT Solar Charge Controller + Victron Smart 30A dcdc charger

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

12V 200AH Lithium Ion Battery

  • DCS Battery delivers a minimum of 2500 Cycles
  • Ideal replacement for Gel or Lead Acid Batteries
  • High performance compared to Traditional Batteries

12V Smart 30A DC-DC & Smart 20A MPPT Battery Chargers

  • Dedicated solar regulator
  • Dedicated dcdc charger
  • Both fully programmable via Bluetooth
  • Obtain full 30A from engine + whatever current the solar panels will provide

Availability: In Stock

Original price was: $3,150.00.Current price is: $2,649.00.

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12V 200AH Lithium Ion Battery

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.

Victron Smart 100/20A MPPT

  • Built-in Bluetooth Smart
  • Direct For a wired data connection
  • Ultra-fast Maximum Power Point Tracking
  • Intelligent battery management
  • Ready to set up and monitor
  • Free VictronConnect app
  • External battery voltage and temperature sensing

Victron Smart 30A DCDC Charger

The output current will reduce at high ambient temperature to protect the battery. When installed with the screw terminals are oriented downwards. No special tools are needed for installation. The engine running detection is based on the voltage of the starter battery. The charger is not always able to measure the exact starter battery voltage because of voltage drop over the input cable.

The voltage drop is determined by variables like current, cable length and cable gauge. The “engine on detection sequence” will perform periodic tests to determine the exact starter battery voltage during charging. The test result determines if the engine is running and charging can be enabled. This feature is only active in charger mode and when “engine detection override” is not activated. In converter mode the “input voltage lock-out” determines when the output is active.

Specifications: –
Nominal Voltage 12.8V
Nominal Capacity (1Hr) 200Ah
Case Dimensions (L x W x H) 512mm x 125mm x 325mm
Weight 31.50 Kgs
Cycling voltage 11.5 ~ 14.6V
Charge voltage 14.0 ~ 14.6V
Float Voltage 13.5 ~ 13.7V
Maximum Charge Current 200A
Recommended Charge Current ≤140A
Maximum Discharge Current ≤250A
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 20Ah Cylindrical LFP (LiFePO4)
Cycle Performance 4000 Cycles @ 100% DOD ≥ 80% Capacity Retention @ 25°C
Cell Pack Design Laser Welded Aluminium With Thermal Interface Resin
LCA 1200
Ingress Protection IP53
Case Metal with white pearlescent finish
Operating temp Range -25°C to 80°C
Terminals Top Mount M8 Stainless steel / Copper
Parallel Connections Up To 10
Warranty 5 years
Certifications UN 38.3, UL 1642, IEC 62133 & 62619, CE

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

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Achieve Greater Solar Efficiency with Our User-Friendly Solar Controller 12v. Keep Your Solar Energy in Check with Our Solar Power Regulator 12v.

In the modern age, with improved technology, lithium batteries are no being mostly used for off-grid electric energy storage. If you are planning to install a solar system and want to mount lithium solar battery storage, you need to connect the lithium solar charge controller. Whether you are installing a new system or it is the old controller that got damaged, and now you want to replace it, Deep Cycle Systems has got you covered with the high-quality and reliable products that we offer at a very low price.

Lithium batteries are the most reliable and long-lasting energy storage solution in solar systems. When connected to a solar system, these batteries need charging to provide energy backup in the absence of sunlight. The solar charge controller’s job is to control the amount of charge produced by solar panels and transfer the voltage to lithium batteries for optimized charging. The charge controller is set in place because the 12v solar panels, in reality, produce approximately 14-16 volts. In contrast, the battery needs voltages in the range of 12.5-13.3 depending upon the battery type.

Deep Cycle System is a leading manufacturer of the solar charge controller. We ensure high-quality charge controllers.  Our charge controllers are designed to provide dependable and long-lasting charge control while also properly managing your solar system. Deep Cycle Systems ensures that our valued customers receive top-notch chargers. Our solar charger ensures the smooth working of your solar system. Deep Cycle Systems is a market leader for providing reliable and durable solar charge controllers.

What is the Need for a Solar Charge Controller?

Solar cells are compact and produce energy efficiently. However, in order to achieve maximum and safe output, they must be controlled by a smart device. A typical solar panel produces 12 volts of electricity. In reality, this 12V photovoltaic panel produces 16 to 18 volts of energy, which is higher than the solar system’s capacity.

For a full charge, solar batteries only need 13.2 to 14 volts. However, because the solar panels create more electricity than is required, lithium solar regulators are installed to regulate the voltage. Therefore, batteries will only receive the exact amount of charge required.

MPPT as a Solar Charge Controller

MPPT means maximum power point tracking. This panel tracking follows the sunlight in real-time, thus enabling the solar panels to produce 15 percent more charging as compared to static solar panels. This feature is especially beneficial in winters when sunlight is for shorter intervals.

At Deep Cycle Systems, we do not just offer solar regulators but, we have a wide range of charge controllers available, and you can choose any of them according to the need and requirement of your installed system. Moreover,

  • Our regulators come with Ultra-Fast Maximum Power Point Tracking.
  • These charge controllers protect your battery from over-discharge as well as over-charge.
  • Come with Intelligent battery management that helps in changing the algorithm depending on battery temperature.
  • You can remotely monitor the battery status and control the algorithm with the help of your Bluetooth enabled smartphone.
  • Our charge controller is highly durable and reliable. They can last for years come so you do not have to replace them too often.

Why Choose Deep Cycle Systems as Your Ultimate Energy Partner?

Deep Cycle Systems is a market leader in offering high-quality energy solutions to our devoted customers. Our customers benefit from Deep Cycle Systems’ high-quality energy solutions. For years, Deep Cycle Systems has been manufacturing and selling extended energy solutions. We can supply the highest quality energy solutions because of our expanded experience, field knowledge, and significant research and development.

Deep Cycle Systems provides a diverse range of energy solutions, including solar panels, solar systems, solar batteries, solar charge controllers, deep cycle batteries, and lithium batteries. We at Deep Cycle Systems offer one of the best energy solutions at affordable prices. Deep Cycle Systems provides reliable and durable energy solutions. Our energy solution products provide a long-lasting service life with rigidity in the field. Deep Cycle Systems offers expert installation services at your doorstep. Therefore, we are committed to enhancing your energy solution at every step, from purchasing energy solution equipment to hassle-free installation. Henceforth, we are one of the best energy solution providers for an extended range of energy solutions.

Deep Cycle Systems has a strong customer base as a result of our years as our products are made for extreme customer satisfaction. When you buy at Deep Cycle Systems, we ensure you are getting the best energy solution consultation. We provide expert consultation for homes, offices and businesses. Deep Cycle Systems is dedicated to one of the most durable and long-lasting energy solutions for all your needs.

Maximise Solar Energy Efficiency with Lithium Solar Charge Controller by Deep Cycle Systems

Deep Cycle Systems specialises in enhancing solar energy efficiency with our advanced Lithium Solar Charge Controllers. These controllers are crucial for managing the power your solar panels generate, ensuring optimal charging of lithium batteries. We focus on maximising energy harvest and protecting your battery life, thereby improving overall system efficiency. Our Lithium Solar Charge Controllers are designed to meet the high standards of solar power systems, providing our clients with reliable and efficient energy management solutions.

Lithium Solar Charge Controller – MPPT Vs PWM by Deep Cycle Systems

At Deep Cycle Systems, we offer both MPPT (Maximum Power Point Tracking) and PWM (Pulse Width Modulation) Lithium Solar Charge Controller. MPPT controllers are known for their efficiency in converting excess voltage into amperage, making them ideal for larger systems. On the other hand, PWM controllers are more cost-effective and suitable for smaller systems. We guide our clients in choosing the right technology based on their specific solar energy needs, ensuring optimal performance and efficiency of their solar power systems.

Smart Solar Battery Charger 12v Regulate Safe Battery Charging by Deep Cycle Systems

Deep Cycle Systems’ Smart Solar Battery Charger 12v is designed to regulate safe battery charging, ensuring the longevity and health of your solar batteries. Our smart charger meticulously controls the charging process, preventing overcharging and undercharging, which are common issues in solar battery systems. This regulation is essential for maintaining battery efficiency and lifespan, making our Smart Solar Battery Charger a vital component for any solar power setup.

Smart Solar Battery Charger Ensure Right Amount of Current is Passing to Your Battery Bank by Deep Cycle Systems

Our Smart Solar Battery Charger at Deep Cycle Systems is engineered to ensure that the right amount of current is passing to your battery bank. This precision in current regulation optimises the charging process and enhances the performance of your solar power system. We ensure that our Smart Solar Battery Chargers deliver a balanced and efficient charge to your batteries, maintaining their health and extending their lifespan, thereby providing a reliable and effective solar energy solution.

Solar Controller 12v Is Capable to Produce 15 to 40% more Power with Same Amount of Solar Panels by Deep Cycle Systems

At Deep Cycle Systems, our Solar Controller 12v is engineered to maximise power output, producing 15 to 40% more power with the same number of solar panels. This significant increase in efficiency means more energy is harvested from each panel, optimising the overall solar system performance. Our technology ensures that clients get the most out of their solar investment, enhancing both energy production and cost-effectiveness.

12v Solar Regulator – Smart and Intelligent Safety Features by Deep Cycle Systems

Deep Cycle Systems’ 12v Solar Regulator is equipped with smart and intelligent safety features, designed to protect your solar energy system. This regulator actively prevents overcharging, short-circuiting, and reverse polarity, safeguarding the integrity of your solar setup. We focus on delivering a product that not only efficiently manages solar energy but also ensures the longevity and safety of the entire system.

Solar Power Regulator 12v – The Under Voltage Restart Limit is 7.5 Volts by Deep Cycle Systems

Our Solar Power Regulator 12v at Deep Cycle Systems comes with a critical feature – an under-voltage restart limit set at 7.5 volts. This setting is crucial for maintaining battery health, as it prevents the battery from discharging too deeply. By setting this limit, our regulator ensures that your solar system operates within safe electrical boundaries, enhancing the lifespan of your batteries and the reliability of your solar power system.

Victron Solar Charge Controller 12v Is Efficient Even in Cloudy Weather by Deep Cycle Systems

Deep Cycle Systems offers the Victron Solar Charge Controller 12v, which is renowned for its efficiency even in cloudy weather conditions. This controller is adept at extracting maximum power in low-light scenarios, ensuring your solar system remains productive regardless of weather variability. Our Victron controller represents a reliable solution for maintaining consistent solar energy output in all weather conditions.

MPPT Solar Regulator 12v are Intelligent than PWM Solar Regulators by Deep Cycle Systems

Deep Cycle Systems offers the MPPT Solar Regulator 12v, a significantly more intelligent solution than traditional PWM solar regulators. Our MPPT regulators are designed to extract maximum power from solar panels by adjusting the electrical operating point of the modules. This intelligent tracking technology ensures higher efficiency and better performance, especially in varying weather conditions, making our MPPT regulators a superior choice for optimising solar energy systems.

Solar Controller 12v MPPT – The Multi-Stage Charging Maximise Battery Life by Deep Cycle Systems

Our Solar Controller 12v MPPT at Deep Cycle Systems features multi-stage charging, a crucial factor in maximizing battery life. This method ensures that batteries are charged efficiently and safely, extending their lifespan. The controller regulates the charge flow, preventing overcharging and ensuring the battery is maintained at optimal levels. This advanced charging technique is integral to maintaining the health and longevity of solar batteries.

Victron MPPT Solar Controller 12v Under Voltage Shutdown Limit is 7 Volts by Deep Cycle Systems

The Victron MPPT Solar Controller 12v, offered by Deep Cycle Systems, has an under-voltage shutdown limit set to 7 volts. This feature is critical for protecting batteries from excessive discharge, thereby preserving their capacity and health. Setting this shutdown limit ensures that the battery is safeguarded against deep discharges, which can significantly impact battery performance and lifespan.

Our Solar Controller 12 Volt is Designed to Minimise Energy Loss Through Wires by Deep Cycle Systems

Deep Cycle Systems’ Solar Controller 12 Volt is meticulously designed to minimise energy loss through wires. This feature ensures that the maximum amount of power generated by the solar panels is transferred to the batteries. By reducing energy loss in transmission, our solar controller enhances the overall efficiency of the solar power system, ensuring that clients get the most out of their solar investment.

The Algorithm of Solar Controller 12 Volt Works Earlier in the Day and Later in the Evening and Maximise Charging Time by Deep Cycle Systems

Deep Cycle Systems’ Solar Controller 12 Volt utilises a sophisticated algorithm that starts working earlier in the day and extends late into the evening to maximise charging time. This advanced feature ensures that solar energy is harnessed efficiently from dawn to dusk, enhancing the total energy yield. We focus on maximising the solar charge period, allowing for more extended and productive charging of batteries, which is crucial for maintaining a consistent energy supply.

Victron Solar Controller is Capable to Even Charge a Battery with Zero Voltage by Deep Cycle Systems

The Victron Solar Controller offered by Deep Cycle Systems is uniquely capable of charging batteries that have been discharged to zero voltage. This capability is critical in scenarios where batteries are deeply depleted. Our controller safely revives these batteries, restoring them to full functionality. This feature underlines the resilience and versatility of our solar controller, making it a reliable choice in even the most challenging situations.

Intelligent Victron Solar Charger Prevents Batteries from a Full Discharge by Deep Cycle Systems

Deep Cycle Systems provides an intelligent Victron Solar Charger that actively prevents batteries from being fully discharged. This protective measure is crucial for maintaining battery health and extending its lifespan. The charger intelligently monitors battery levels, intervening before a complete discharge occurs, thus safeguarding the battery against potential damage and ensuring its long-term reliability.

Victron Solar Charger – Set a Load Disconnect Voltage as Per Your Requirement by Deep Cycle Systems

Our Victron Solar Charger at Deep Cycle Systems allows clients to set a load disconnect voltage according to their specific needs. This customisable feature ensures that the load is disconnected at a safe voltage level, protecting both the battery and the connected devices. It offers flexibility in managing power usage, allowing for tailored energy solutions that meet individual requirements and conditions.

Victron DC to DC Charger with MPPT – Get Benefits of Adaptive 3-Stage Charger by Deep Cycle Systems

Deep Cycle Systems introduces the Victron DC to DC Charger with MPPT, featuring an advanced adaptive 3-stage charging process. This innovative charger maximises the efficiency of charging by automatically adjusting the charging stages – bulk, absorption, and float. This adaptive process not only ensures a faster charging rate but also significantly extends the battery life by preventing overcharging and undercharging. Our Victron charger is ideal for users who demand a high-efficiency charging process that adapts to their power needs, making it a top choice for diverse applications.

Victron DC to DC Charger with MPPT Works Under 55 Degree Celsius by Deep Cycle Systems

At Deep Cycle Systems, our Victron DC to DC Charger with MPPT is designed to operate effectively under temperatures as high as 55 degrees Celsius. This high-temperature tolerance ensures reliable performance in even the most demanding environments. We ensure that the charger maintains optimal functionality and safety standards, providing a consistent and efficient charge irrespective of external temperature conditions. This feature is crucial for applications in hot climates or in situations where the charger is exposed to high ambient temperatures.

The Benefit of Battery Charge Algorithm for Victron Solar Regulator by Deep Cycle Systems

Deep Cycle Systems highlights the benefits of the sophisticated battery charge algorithm in our Victron Solar Regulator. This algorithm tailors the charging process to the specific type of battery being used, whether it’s AGM, gel, lithium, or lead-acid. By adjusting the charging parameters to suit the battery’s chemistry, the regulator ensures optimal charging, prolonging battery life and enhancing overall system efficiency. This intelligent charging approach is key to maintaining battery health and maximising energy efficiency in solar power systems.

Victron Solar Regulator is NEN EN ISO 9001:2015 Certified by Deep Cycle Systems

The Victron Solar Regulator offered by Deep Cycle Systems proudly holds the NEN EN ISO 9001:2015 certification, a testament to its quality and reliability. This certification indicates that the product meets high international standards for quality management systems. We are committed to providing our clients with solar regulators that are not only efficient and effective but also adhere to rigorous quality standards, ensuring trust and confidence in their performance and durability.

Call Us Today

Order now or if you have any questions or want to know more about our products, you can contact us by giving us a call at, Tel: 1300-795-327. You can also email us at info@deepcyclesystems.com.au

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SHIPPING

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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.
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FAQ

CELL SAFETY INFO - Why LiFePO4 (LFP)?

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.

WHY YOU CANNOT USE A VSR BETWEEN TWO DIFFERENT BATTERIES CAPACITIES & 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.

What if both batteries are the same, can I run a VSR between exactly the same two batteries?

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.

The advantages of the lithium battery cell chemistry

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.

WHY CAN DCS BATTERIES BE CONNECTED IN PARALLEL WITHOUT ANY EXTERNAL COMMUNICATION SYSTEM?

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.

WHAT HAPPENS IF I FULLY DISCHARGE MY BATTERY TO EMPTY?

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.

BATTERY MONITOR SETTINGS

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

WHAT IS THE BEST STATE/CHARGE TO STORE THESE BATTERIES ?

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.

WHAT SOC DO MODERN SMART ALTERNATORS TYPICALLY CHARGE BATTERIES TO?

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.

RECOMMENDED CHARGER SETTINGS FOR DCS 12V BATTERIES:

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

SOC% Out - How to Reset?

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

How to Wire Batteries Correctly

Click Here to Download the Victron Battery Wiring Guide

 

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