SKU: DCS-12V-80Ah
12V 80Ah Extreme battery (LITHIUM)

FREE DELIVERY AUSTRALIA WIDE

Specifications of our 12V 80Ah Extreme batteries:

  • Specifically developed for naval and military applications
  • Well-suited for under bonnet and winching applications
  • Come with 10C rated heavy-duty LFP Cells
  • Automatic cell balance technology
  • Extended service life
  • 306 x 168 x 211mm ABS flame retardant case
  • Weight: 14Kgs
  • Works between -25 degrees to 85 degrees C
  • 1000CCA at -20°C and up to 1400CCA at normal temp.
  • 3-year return to base warranty

Availability: Out of Stock – Back in Stock Late July

$1,650.00 AUD

From $121.80 a fortnight withInfo

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Cycle test discharging the battery from 100% SOC to 0% SOC at 250Amps and charging back up to 100%SOC at 120Amps.

These are specifically developed for demanding naval and military applications. They are well suited for under bonnet and winching applications.

Specifications:
Nominal Voltage 12.8V
Nominal Capacity (1Hr) 80Ah
Case Dimensions (L x W x H) 306mm x 168mm x 211mm (N70 size)
Weight 14Kgs
Cycling voltage 11.5 ~ 14.6V
Charge voltage 14.0 ~ 14.6V
Float Voltage 13.5 ~ 13.7V
Maximum Charge Current 180A
Recommended Charge Current 50A+
Maximum Discharge Current less than or equal to 250A
BMS (built in) Automatic cell balancing, over discharge/charge & temperature
Cell Chemistry DCS 3.2V 3.0 – 7.2Ah Cylindrical (LifePO4)
Ingress Protection IP54
Case ABS plastic flame retardant case
Operating Temp Range -25 degrees up to 110 degrees C
Terminals M8
Parallel Connections Up to 10 in parallel
Series Connections Up to 48V
Warranty 3 years

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

Buy 12v 80ah Extreme Battery or 80ah deep cycle battery Offered By DCS to Get the Optimum Performance

12v 80ah extreme battery

A 12-volt outrageous battery is a battery that can store twelve volts of force at a time. A 12-volt battery can be enormous or little, battery-powered or expendable. Generally, it is, for the most part, bought as a substantial battery-powered 12v 80ah extreme battery since it is predominantly utilized in more extensive applications like vehicles, boats, sun based packs, and other apparatus.

Why Purchase 80Ah Extreme Batteries?

Tube shaped cells

DCS batteries utilize 32650 treated steel round and hollow lithium-particle battery cells. Tube shaped lithium cells ordinarily have substantially more force, preferred execution and a more prominent life span over kaleidoscopic cells.

Triple safety design

Deep cycle lithium batteries have three layers of wellbeing security in every cell:

The treated steel lithium iron phosphate cells incorporate internal security intertwine. If the cell overheated (up to 135C), the breaker would, in a flash, break the association between the anode and the cathode. Lengthways circuit sheets between each layer of cells screen current, temperature and pressing factor. If the cell packaging shows a high interior pressing characteristic, the positive and outer (negative) current will be cut off by the programmed voltage cutoff. These sheets additionally keep a short-circuited cell from causing any battery harm on the off chance that the internal pressing factor in any phone is over the protected worth of 1.5Mpa, its wellbeing valve releases, lessening the crucial factor naturally.

Solid and Rugged Construction

DCS batteries utilize hardened steel blast verification cells. Every cell has its top and base negative and positive presents welded on a plate and afterwards dashed to the plate too for a protected physical and electrical association. The powerful get together empowered DCS lithium batteries to pass the strenuous GB/T 2423.10-2008 shock/vibration testing.

80 ah battery80ah lithium batteryFull-featured Battery Management System (BMS)

The “cerebrum” of the 80 ah battery is the Power Control Board (PCB), which gives the BMS highlights. Warmth protected battery links associate the lengthways circuit sheets to the PCB. The BMS highlights incorporate programmed low-and over-voltage security, cut off, switch extremity insurance, and charge adjusting. As a result of the BMS, you can interface various DCS lithium batteries in series or equal without outside insurance.

Industry-leading warranty

The extensive DCS 80ah lithium battery guarantee is a 5-year restricted guarantee: initial three years complete substitution, most recent two years supportive of evaluation. No other lithium battery producer remains behind their lithium batteries like DCS.

Free shipping

We are sans giving delivery on batteries to business addresses inside 60 miles of any of our Sydney stockroom areas. Transportation outside of stockroom regions will contrast contingent upon size and weight – batteries are big and cumbersome.

Why Choose Deep Cycle Systems?

If you are looking for the best 80ah extreme battery, there is no one better than Deep Cycle Systems to provide you with such batteries. Our batteries are manufactured with high-quality components and are long-lasting and durable. When you have installed our batteries, you can rest assured that you will get the best performance.

Get a Dry Cell 80ah Deep Cycle Battery for Your Home or Work

A battery doesn’t make electricity, but it necessarily stores the electricity from the grid or any renewable energy sources, i.e., wind turbines, photovoltaic cells, hydropower, etc. The use of a battery has enabled us to shift from desktop devices to portable, palmtops, and laptops devices, which has geared the productivity level by manifolds. In terms of electricity, the researchers came up with portable solar battery chargers kits that enabled humans to generate free clean solar energy on the go or stay at any static position. These solar kits mainly include a deep cycle battery that is crucial for those who mostly move from one point to other for any reason. These dry cells significantly helped off-grid electricity users continuously power up their electric appliances.

Deep Cycle Battery

A Deep Cycle Battery is a rechargeable storage device that stores direct current electricity to use when required. You can add a power battery to both on-grid and off-grid electric systems. For on-grid systems, an inverter and a battery charger are used as the main system component for smooth operations. The battery charger ensures the battery is charged safely by protecting it from being overcharged. At the same time, it also secures the battery from overheating over and under-voltage damage by disconnecting loads timely. The dry cell battery phase out power breakouts and disruption in case the local grid fails due to any reason.

The dry cell storage battery becomes paramount for off-grid electricity because grid failure is a rare chance. The off-grid mainly relies on a generator, photovoltaic plates, or wind turbine to generate electricity, so having a reliable backup power solution is valuable for avoiding long power disconnects. In the case of solar battery kits, you can charge your large battery bank to have an uninterrupted power supply for evening and night time.

A dry cell battery, also known as gel battery in an off-grid system, saves you from expansive diesel or gas that your generator requires to produce electricity. Sustainable solar panel kits are helpful to escape from the noise of generators and carbon emissions.

12v 80Ah extremeBest Deep Cycle Dry Battery

When purchasing a battery to store power as a backup lifeline, the dry cell lithium deep cycle battery is the best option for both on-grid and off-grid installations. A 12v 80Ah extreme dry cell deep cycle battery is suitable to operate most machines, motors and appliances rated at a 12 volt current supply. After the voltage rating, one should know the number of amperes needed for all active power loads. The ampere-hours are the power capacity that gives backup time.

If the total load power is rated at 500 watts for a 12v system, the required current requirement is 41.667 amperes and 208.33 ampere-hours. It’s better to have a slightly high ampere-hour battery bank keeping in view the energy losses, and you can’t discharge a battery fully as it damages battery cells. It’s better to have a 250ah dry cell battery. Alternately, you can also have two deep cycle batteries of smaller denominations.

Deep Cycle Systems has been one of Australians’ most trusted energy solutions providers for years. People have confidence in our products and services, that’s why most of our customers or repeat customers for their new projects or refer us to others. We provide reliable energy solutions manufactured perfections keeping in view the high industry standards to enhance customer experiences.

80ah deep cycle batteryExtreme 80ah Deep Cycle Battery: A Great Way for Renewable Energy

Battery technology has advanced over the years rapidly. Due to this advancement, we now have innumerable options to choose from a long list. An extreme 80ah deep cycle battery is a great way to adopt safe and reliable renewable power. Deep cycle batteries are ideal due to their safe and stable chemistry.

In theory, the deep cycle batteries resemble starter batteries. However, there is a leading class difference between the two. A deep cycle battery provides a lesser amount of peak power for a longer time. On the other hand, the starter battery offers short bursts of maximum energy. Therefore, deep cycle batteries run the engine while a starter battery is usually required to start up the engine.

Deep Cycle Systems is a reliable deep cycle battery manufacturer. We offer top-notch deep cycle batteries to our valuable customers. Deep Cycle Systems is a market leader in deep cycle batteries. Our deep cycle battery works optimally even in harsh weather conditions. Our deep cycle batteries are built on industrial standards. Deep Cycle Systems is an experienced battery manufacturer, selling premium quality deep cycle batteries to its customer for years. We at Deep Cycle Systems have enhanced experience, research, and development over the years. Henceforth, our deep cycle batteries are built to provide a longer service life. Deep Cycle Systems is committed to manufacturing reliable and durable deep cycle batteries.

What is a Deep Cycle Battery?

A deep cycle battery is technically a modern-day lead-acid battery. However, in terms of practicality and reliability, it varies from the typical lead-acid battery. A traditional lead-acid battery has acid-filled inside them in the form of liquid. Whereas a deep cycle battery instead has gel or sealed acid between its cells. In the case of a flooded deep cycle battery, the acid is actually in contact with the battery cells.

Types of Deep Cycle Battery

Deep cycle batteries can be divided into four general types, depending on their types and working.

  • Gel Deep Cycle Battery
  • Flooded Deep Cycle Battery
  • Absorbed Glass Mat or AGM Battery
  • Sealed Deep Cycle Battery

Among the types of deep cycle batteries, the sealed deep cycle battery is the best and most reliable type of deep cycle battery used by the majority. However, all deep cycle batteries provide a good power solution. It depends upon your options and circumstances for which deep cycle battery works perfectly fine for you.

hardcore batteriesWhy is Deep Cycle Battery Superior?

Deep cycle hardcore batteries produce clean, green, and renewable energy. Therefore, deep cycle batteries play a role in getting the environment cleaner and greener. Deep cycle batteries offer sustainability. These batteries are safer and more accessible to deposit than the traditional lead-acid battery. Henceforth, deep cycle batteries can be relatively easily disposed of while creating less or almost no pollution. Deep cycle batteries are good for the environment.

Why Deep Cycle Systems for Durable Energy Solutions?

Deep Cycle Systems is a leading energy solution manufacturer. We have been in the business of creating the best energy solutions for our valued customers for years. Henceforth, our comprehensive research, experience, and development over the years enable us to create premium quality energy solutions. Our extended list of energy solution products includes inverters, solar panels, solar batteries, solar systems, pure sine wave inverters, lithium batteries, deep cycle batteries, deep cycle battery chargers, etc. Deep Cycle Systems is a one-stop shop for all your energy solutions.

Get in Touch

Get in touch with us by calling our friendly customer care representatives at, Tel: 1300 795 327. If you have any queries related to our batteries, you can send them via email at info@deepcyclesystems.com.au.

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. 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 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 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.

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

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.