SKU: DCS-12V-100Ah
DCS 12V 100AH (LITHIUM)

FREE DELIVERY AUSTRALIA WIDE

12V 100AH Lithium Ion Battery | Deep Cycle | Engine Starting

DCS Batteries are the ideal drop-in 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 replacement warranty.

Availability: In Stock

$1,399.00 AUD

From $104.42 a fortnight withInfo

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All DCS Batteries now feature our comprehensive Bluetooth System available on both Android and Apple operating systems that 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 HIGH PERFORMANCE 2C CHARGE & DISCHARGE CURVES

Specifications:
Nominal Voltage 12.8V
Nominal Capacity (1Hr) 100Ah
Case Dimensions (L x W x H) 328mm x 171mm x 215mm
Weight 13.1 Kgs
Cycling voltage 11.5 ~ 14.6V
Charge voltage 14.0 ~ 14.6V
Float Voltage 13.5 ~ 13.7V
Maximum Charge Current 100A
Recommended Charge Current ≤70A
Maximum Discharge Current ≤200A
BMS (built in) Automatic cell balancing, over discharge/charge
Cell Chemistry DCS 3.2V 5.0 – 7.2Ah Cylindrical (LifePO4)
Cycle Performance 2500 Cycles @ 100% DOD
LCA 1000
Ingress Protection IP54
Case ABS (flame retardant plastic)
Operating temp Range -30 to +80 degrees C
Terminals Top Mount M8 Stainless steel / Copper
Parallel Connections Only YES
Series Connections No
Warranty 4 years | 3 years under bonnet

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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Purchase Our 12V 100Ah Lithium Battery or 100ah Deep Cycle Battery For Optimum Performance

12v lithium ion battery12V 100Ah lithium battery

Do you want to replace your underperforming battery with a heavy-duty 12v lithium ion battery for an uninterrupted power supply? Are you looking for an alternative to the old fashioned lead-acid battery? Are you on a hunt for a feature-rich modern battery storage system? You need not worry about that as Deep Cycle System is a premium battery manufacturer in Australia with years of reliable services.

The energy storage battery is vital to avoid uncertainty and grid power failure. A 12V 100Ah lithium battery ensures you have power backup for your home appliances. Most of the home appliances are 12v electric systems; that’s why the 12v battery banks are high in demand. So whatever machines you have at home they will remain in use even when grid power isn’t available.

100AH Lithium Ion Battery100ah lithium batteryBattery Power for Peak Hours

People in Australia spend more time at home after returning from work, making the energy demand rise after the afternoon and in the evening. The grid electricity is costly during peak hours which is a significant cause for a rise in electricity bills. The best solution to lower the electricity bill is to store it during low tariff hours and use it during peak hours. A 100ah lithium battery is helpful to keep grid electricity to power a load with a specific watt load.

Backup Time

The 100AH Lithium Ion Battery can provide a backup time of roughly three and half hours for a 300 watts load. The calculation is simple, get the current value in ampere by dividing the load with battery voltage, i.e. 300/12 gives 25ampere current needs to be drawn from the battery. Now divide the battery ampere-hours by ampere, i.e. 100/4 gives four hours. If the depth of discharge is 90%, you will get 3.6 hours of backup time.

12 volt lithium battery100ah lithium ion batteriesSolar Energy Storage Solution

Storing solar electricity is suitable for both off-grid and grid-tied solar projects. 100ah lithium ion batteries are best for a small shed where grid electricity isn’t available.

Durable 12 Volt lithium battery for Providing Power Solution to Wide Range Usage

Lithium batteries are dominating the power solution on a global level. From powering up cell phones to laptops, they provide a backup power source for inverters. Henceforth, lithium batteries have become a primary source to daily lives ranging from powering vehicles to providing electrical backup.

Lithium batteries are more reliable with technology advancing rapidly while maintaining power and portability. 12 volt lithium battery is used for various applications. These lithium batteries are standard in powering home devices and providing backup power via an inverter. Lithium batteries have replaced traditional lead-acid batteries over the years. They are widely adapted for indoor home usage and outdoor usage such as camping, off-grid living, boating, caravan etc.

Deep Cycle Systems specializes in manufacturing lithium batteries suitable for a wide range of usage. Over the years, with our extensive research and development, we have created durable, long-lasting and efficient batteries to provide trouble-free power solutions to our customers. Our Lithium batteries withstand harsh conditions and every terrain. One time investment in DCM lithium batteries gets you a long-lasting, reliable solution for all your power needs. With a wide range of lithium batteries, we at Deep Cycle Systems can cater to all your power needs, from backup to regular usage.

LiFePO4 batteryWhy Lithium batteries?

LiFePO4 battery has been in production for years. However, with years passing, the technology has advanced and is accessible to the ordinary person in pricing and availability. In other words, lithium batteries have refined with time, as now they are a trusty power solution.

Following are the strong points as to why you should consider buying lithium batteries.

Durability

Traditional lead-acid batteries require careful monitoring of acid levels, ensuring that the acid level is optimal. On the other hand, lithium batteries require no maintenance of acid levels. Hence, they essentially are trouble-free.

Fast Charging Capabilities

Lithium batteries tend to charge faster as compared to a lead-acid batteries. A lithium battery can be used without charging after every use. They do not have memory function like lead-acid batteries, as they tend to lose their charging capabilities when used in-between the charges.

12v battery lithiumSafety

Safety is the number one concern for everyone, whether commercial or private. Lithium batteries are safer to use as their cells are built to withstand harsh conditions, preventing sudden fires or simply bursting into flames. 12v battery lithium does not have flammable fuel; hence they are safer to use. The absence of liquid acid in lithium batteries adds to safer usage.

Environmental Friendly

Carbon emission on planet earth is a rising environmental crisis. Henceforth, lithium batteries help reduce fossil fuel emissions by powering simple devices to vehicles.

12v lithium ion batteriesWhy buy from Deep Cycle Systems?

Deep Cycle Systems specializes has a wide range of long-lasting, durable lithium batteries with increased operating capabilities. Our wide range of products, solar panels, and inverters, from lithium batteries to lithium chargers, provide a complete power solution tailored to your indoor or outdoor power needs.

Deep Cycle System has outstanding services of experienced installers. We have experienced sales staff to guide you according to your needs from buying to installing our products. In addition, our team of professional technicians make the installation process smooth and trouble-free.

12v lithium batteries12V Lithium Ion Batteries for a Prolonged Energy Storage Solution

Solar systems are the new energy solution for powering up your house during a power outage or reducing your electrical usage in the day. The solar system is ideally combined with 12v lithium ion batteries giving power to your home or workplace during peak hours. Electricity company providers charge you extra through smart meters, so a solar system with lithium batteries is ideal. As a result, these lithium-ion battery-powered solar systems provide backup and help keep total costs low. The energy density of lithium batteries is excellent, and the price per cycle is down. LIFEPO4 is the most efficient battery for your power solutions in renewable solar energy.

Deep Cycle Systems specializes in trouble-free, low-maintenance lithium batteries for solar systems, ensuring that you never run out of electricity. Our lithium ion batteries are built to withstand harsh weather conditions while delivering excellent battery backup. Deep Cycle Systems has been in the business of providing one of the best and top-notch quality 12v lithium batteries for years.

10ah lithium ion batteriesLithium Batteries Are Self-Sustaining

Your solar system will automatically switch from grid to battery power when your lithium batteries system is connected to a smart metre during peak electricity supply times. Later, when the price of a unit lowers in the evening, and the electricity demand is low, your smart solar system automatically switches to an electrical supply. As a result, this intelligent solar system aids in the reduction of energy costs while also offering a reliable power source.

The Solar System with Lithium Batteries Does Not Require a Complete Charge

Plate degradation is typical with lead-acid batteries if they are not fully charged regularly. Lithium-ion batteries, on the other hand, are unaffected by setting inconsistencies. The lithium-ion batteries used in solar systems do not have to be assigned to capacity every time they are used. In fact, rather than charging them 100 per cent, it is preferable to leave them with a bit of partial charge.

Furthermore, even 10ah lithium ion batteries are more efficient than lead-acid batteries for the following reasons.

  • Charge from complete to dead is used to describe a round trip. The round-trip efficiency of lead-acid batteries is around 80%
  • The lithium-ion phosphate battery has a charge time of fewer than 2 hours from zero, making it highly efficient.

12 v lithium ion batteriesSolar Batteries Have a Longer Life Span

Have you ever observed that your cell phone stores less charge as time passes than it did when it was first purchased? This is because your phone’s ability to store charges decreases as it gets older. Similarly, the ability to store charge declines with solar batteries, but a good battery can last you considerably longer charging cycles. A lithium-ion phosphate battery, for example, promises 5000 cycles or ten years of service at 70% of its original capacity. This implies that even when your old battery is set to go out of warranty, it will only lose roughly 30% of its total capacity. The number of cycles promised by the manufacturer determines how long your solar battery will survive. If you choose a decent 12 v lithium ion batteries, your battery will most likely keep its ability to maintain a charge for a long time.

Deep Cycle System is a company that specializes in solar system solutions that are integrated with lithium-ion batteries for optimal performance and long-term durability. We offer expert installation services for our durable and reliable lithium batteries to ensure a smooth energy storage solution for our valuable customers.

100ah deep cycle battery100ah Deep Cycle Battery: Best for Marine and Recreational Vehicle Usage

Deep Cycle Battery is reliable and durable when it comes to usage. These batteries perform better than the traditional lead-acid battery. Deep cycle batteries offer increased reliability, far more efficiency, and better maintenance and durability. Deep cycle batteries provide a greater good for the environment. Henceforth, more and more people have shifted to the 100ah deep cycle battery in place of other batteries.

Deep Cycle Systems specializes in manufacturing durable, reliable, and safe deep cycle batteries. We are committed to providing top-notch deep cycle batteries to our valuable customers. Our deep cycle batteries offer ultimate power backup along with long-lasting service life. Deep Cycle Systems batteries are trustworthy as they provide you with safe power backup.

Deep cycle batteries have significant benefits over regular lead-acid batteries. They offer more remarkable service. Following are some key benefits a deep cycle battery provides.

Strong Efficiency

Deep cycle batteries output the energy continuously. In comparison, a traditional lead-acid battery fluctuates in power regularly as the charging runs down. Deep cycle batteries can stand the test they are put through. Henceforth, deep cycle batteries are widely being adopted.

Environmental pollution has been a critical concern for humanity and its survival. With ecological pollution increasing every day, the reliance on fossil fuels has to be cut short. The deep cycle batteries we provide are efficient and safe for environmental usage.

Easy Maintenance

Deep cycle batteries are easy to carry out maintenance. Deep cycle batteries do not require regular maintenance, unlike lead-acid batteries. Therefore, these batteries are ideal for their usage in solar systems. This is because deep cycle batteries can hold the charge much longer than the traditional battery.

lithium battery 12v 100ahGreater Durability

Deep cycle lithium battery 12v 100ah offers more excellent durability. A deep cycle battery provides much more stability than the normal car battery for starting purposes. A standard starter battery for a car or other vehicle provides peak power during starting. However, after the startup, these batteries begin charging from the alternator. Therefore, ordinary batteries are not durable in machines that require steady power for an extended amount of time. Deep cycle batteries provide durable power for more amount of time as compared to the starter battery.

Deep cycle batteries offer safer, reliable, and durable power. However, they need to be charged from a dedicated deep cycle charger. A standard battery charger cannot efficiently charge your deep cycle battery while gaining the maximum output. Therefore, you require a special deep cycle battery charger for charging your battery efficiently.

When purchasing a deep cycle battery, you need to perform a process known as “equalizing”. The equalizing process involves providing a low charge to your battery for an extended amount of time. The battery cells are kept in balance with each other so that during the time of using these cells, it delivers out the same output. During the usage cycles of deep cycle batteries, especially in a marine application, the equalizing process should be part of your weekly maintenance.

lithium ion deep cycle battery priceWhy buy from Deep Cycle Systems?

Deep Cycle Systems is a leading market provider for deep cycle batteries. We offer ultimate power solutions at affordable lithium ion deep cycle battery prices. We are committed to providing the best power solutions with our wide range of inverters, lithium batteries, deep cycle batteries, solar systems, solar panels, etc. Deep Cycle Systems is a top-notch provider for power solutions. We offer experienced installers for a smooth and hassle-free experience.

LiPo battery 12vHighly Efficient LiPo Battery 12v at an Affordable Price

LiPo battery stands for the full name of Lithium polymer battery. It is also referred to as a Li-Po battery or Lithium-ion polymer battery. A LiPo battery 12v uses a polymer electrolyte instead of a liquid one. This is because the polymer electrolyte delivers more specific energy than the other types of lithium batteries. The LiPo batteries are a reasonably new battery type, and their usage is more common in consumer electronic devices such as RC cars, RC planes, drones, etc. subsequently, it is evident that these batteries have been taking control and gaining popularity in the last few years among the radio control industry. LiPo or Li-Po batteries are ideal for someone who requires a longer running time while needing higher power.

Deep Cycle Systems is a market leader in selling Li-Po batteries. We offer premium quality LiPo batteries to our valuable customers. Deep Cycle Systems Li-Po batteries are built to excessive relier power reliably and durably. Our batteries are built to withstand harsh weather conditions. Deep Cycle Systems LiPo batteries provide a long-lasting service life for an extended amount of time. Our batteries offer reliable performance with increased power and longer running time. Henceforth, Deep Cycle Systems LiPo batteries are ideal for usage in your drones, RC cars, RC planes, and other such devices.

Are Li-Po Batteries Worth It?

LiPo batteries come with a wide range of benefits. However, it is up to the user to decide if the benefits offered by LiPo batteries outweigh the drawbacks. For the majority of the people, benefits matter and serve more as compared to the disadvantages. LiPo batteries are reliable and safe to use as long as you take care of them, handle them correctly and follow the rules.

How to Select the Ideal LiPo Battery Size

LiPo battery size depends upon the amount of power you require. Bigger the capacity more flight or running time your battery will deliver. However, as the size increase, so does the weight. Therefore it is always recommended to check with the instruction manual of our device. This helps in figuring out the maximum battery size you can run safely.

lithium ion battery 12v 100ahKeep an eye on Discharge Rate and Capacity

Determining the discharge rate ideal for your usage device from LiPo battery is crucial yet often overlooked. A battery with too low of a discharge rate can damage the battery quickly. This can lead to an insufficient voltage supply to ensure the smooth running of, let’s say, your RC car or drone. The higher the battery has discharging rate, the heavier it is. Henceforth, if you are using a battery that has a high discharge rate, it is more likely that you just are carrying extra weight around yourself that you don’t need. This increased weight ultimately shortens the running time of your device being powered by the LiPo battery.

Why Deep Cycle Systems?

Deep Cycle Systems offers expert installation services of our energy solutions. Our team of expert installers makes the installation process seamless and hassle-free. Henceforth, when you select Deep Cycle Systems for all your energy solution needs, we make sure you get a premium experience from purchasing to delivery at your doorstep and fast installation. Deep Cycle Systems is a market leader for delivering premium energy solutions to our valuable customers. With years’ worth of experience in the field, our products are developed by research and development. Deep Cycle Systems delivers long-lasting and reliable power solutions.

Lithium car batteryBest 12vdc Deep Cycle Battery For Car With Increased Durability and Longevity

Technological advancements in Lithium car battery have provided cars & SUVs with more performances under the wheels while extending the travelling range. In addition, Lithium batteries being improved over the years have become more cost-effective and sustainable, ultimately becoming affordable for the consumer.

Deep Cycle Systems is a top-grade lithium battery manufacturer. We provide excellent battery support to your vehicles ranging from cars to SUVs. Our lithium batteries last longer while delivering performance and durability. In addition, the battery produced at Deep Cycle Systems is highly effective. Our battery has a minimum discharge, thus enough power for your vehicle to function if it sits idle for an extended amount of time. On the other hand, our lithium battery is solid for daily usage as they are resistant to harsh weather conditions while working at its total capacity.

Types of Lithium Battery for Cars

When it comes to a car battery, several types of batteries are being used in cars. Therefore, technological advancement in the chemistry of lithium batteries has provided various kinds among it.

Lithium-ion (Li-ion)

Li-ion is the most common and widely adapted type of lithium battery. It is the most advanced type used in many devices and places, from powering cellphones to laptops, cameras, etc. Like Li-ion batteries, they also power bigger electrical appliances such as inverters and provide backup in RV vehicles. Lithium-ion has the most stabilized chemistry among its types, storing more charge and leading to more backup capacity.

Molten salt

This lithium battery type is also known as Zebra battery. In Africa, these Zeolite battery research was used in some concept cars and buses for urban transportation. Molten Salt batteries can resist overcharging and over-discharge. The lithium battery of molten salt type is immune to lower temperatures; hence, robust in harsh conditions. However, the disadvantages this type brings to the table are increased internal temperature as high as 270 °-350 °C. Henceforth these batteries are unsafe for their usage in electric or fossil fuel-powered vehicles.

12vdc deep cycle batteryWhich Lithium Battery type is best?

Choosing the best Lithium car battery is not simply about selecting the battery with maximum range. A car manufacturer must consider several other factors such as affordability, compatibility, longevity and spacing. Hence, a lithium battery is best suited for usage in cars. Lithium batteries, over the years, subsequently have proven most suitable for their usage in automobiles and other applications in battery-powered energy solutions.

Deep Discharge

A dry battery is known for its deep discharge property and is recommended to get 90% discharge of total capacity. Though you can fully discharge a dry cell battery regularly, it would cause a shorter lifespan due to wear and tear. A 100 ampere-hours dry battery means you can draw 90 ampere-hours safely, and thus despite the high cost, you benefit when compared with the cost per ampere-hours.

Let’s suppose a 100 ah lead-acid battery is priced for 100$, while a 100ah dry battery is priced for 120$. You are recommended to draw half current only from the acid battery, the cost per ampere-hour would be 2$. The cost per ampere-hour for a dry battery would be 1.33$. So, despite the high battery cost, the AGM battery becomes more beneficial for you. Further, the dry battery is lighter than a lead-acid battery, ensuring a smooth relocation.

Why buy a Lithium battery from Deep Cycle Systems?

The answer is simple, we at Deep Cycle Systems have high-performance, durable batteries at a very affordable price being offered to our customers. Our batteries are refined due to years of research and development hence providing you years of running time without any hassle. Our 12vdc deep cycle battery is the best option for a car.

RELIABLE POWER BY DCS

Deep Cycle Systems believes in providing the best support to our utmost customers. You can contact us for guidance in product buying and installation. Call us at 1300 795 327 for your energy solutions. The lithium ion battery 12v 100ah is a reliable energy source for on-grid and off-grid electric appliances.

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Battery Terminal Configuration

RHP – Right Hand Positive, LHP – Left Hand Positive

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. However these devices draw a lot of power when engaged to so it’s best to run the two batteries in 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 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 signal with at least 1A of current to release and wakeup from a cell 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.

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 connect to smart alternators? Exactly the same thing thry 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.

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

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. However these devices draw a lot of power when engaged to so it’s best to run the two batteries in 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 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 signal with at least 1A of current to release and wakeup from a cell protection state. Most mains chargers with a lithium profile will do a slow recovery charge as will most solar regulators. Some chargers in 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.

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.