We will be closed from Friday 22nd DEC 3pm until Monday 8th JAN 8am during the Christmas & NY period to recharge our batteries. Cut off for last orders will be Midday Friday 22nd DEC


120ah lithium battery

    Lithium battery is excellent in terms of withholding charge and long battery life. Lithium battery charges faster while being resistant to discharge. In addition, lithium battery is maintenance-free. They do not require active maintenance. 120ah lithium battery can function efficiently in harshest hot and cold weather conditions. Lithium battery is lighter faster and deliver more performance than lead-acid or AGM batteries.

    Lithium Ion Battery 120ahDeep Cycle Systems 120ah Lithium Battery – Built Better, Safer, and More Efficient

    Deep Cycle Systems 120ah lithium battery is built with high quality while complying with safety standards. Deep Cycle Systems strongly believe in providing the highest quality lithium batteries, lighter, more efficient and safer in use. Our lithium batteries are built to last longer while maintaining their charging capabilities for a more extended period. In addition, Deep Cycle System lithium batteries are made to be safe from discharging when not in use. Unlike typical lead-acid batteries, our lithium batteries cell is not damaged when not used.

    Why Buy a 120ah Lithium Battery?

    Our 120ah lithium battery offers the following advantages:

    • Efficient in energy
    • Affordably priced
    • Lighter in weight
    • Safer in use
    • Small size as compared to same capacity of lead-acid or AGM battery

    In addition to the advantages mentioned above, our lithium battery offers the following when you buy from Deep Cycle Systems.

    Our Lithium Battery Delivers Maximum Power

    Our lithium batteries are made from the advanced technology of LifePO4 cells, the most advanced chemistry of lithium batteries. Lithium battery offers more charging storage and capacity than AGM and lead-acid battery with lesser size. Our lithium battery is lower half in weight than the traditional battery. The LifePO4 cells used in lithium batteries are widely being used in devices.

    The battery cells are abundantly available if you want to replace the cells after a long time rather than a full battery. Our lithium battery provides more power with constant voltage than the same sized traditional lead or AGM battery. Henceforth, a lithium battery provides you with maximum performance.

    Lithium Batteries Are Charged 100%

    A traditional battery charger will charge our lithium battery to almost 97%. However, a specialized lithium battery charger will charge the battery to 100%. However, a specialized charger is not necessary, but it certainly increases the battery life in the long term.

    Lithium batteries are charged to 100% capacity, whereas lead-acid battery cells do not reach 100% even at full charge.

    Lithium Batteries Are Great for Camping, Caravan and Outdoor Activities

    The right sized lithium battery is perfect for camping, caravan, or participating in any other outdoor activity. 120ah lithium battery is your reliable partner powering up your needs when you need a power backup. The lithium battery will do just about any job you expect from a lead-acid or AGM battery with less space and smaller size. However, their discharging ability, along with faster charging, is what makes them suitable for outdoor adventures.

    Additional Advantages of Lithium Batteries

    • Lithium battery charges excellently with solar panels.
    • They work perfectly for marine and 4×4 conditions.
    • Lithium battery is ideal for dual battery systems in vehicles

    Why Deep Cycle Systems is the Best Move?

    Deep Cycle Systems specialises in products ranging from lithium batteries to solar panels, lithium battery chargers, and accessories for power solutions. In addition, we offer a great range of entire solar systems suitable to your need. Our products are of premium quality at affordable and reasonable prices. We at Deep Cycle Systems value our customers’ satisfaction. Our products are manufactured to long-last. We have expert technicians for the best installation according to your needs.

    Contact Us

    Get in touch with our cooperative customer care representatives for the best guidance. Call us at, Tel: 1300 795 327. For further queries, you can also email us at info@deepcyclesystems.com.au

    Buy Now or Call us now at 1300-795-327

    Frequently Asked Questions (FAQs)

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

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

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

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

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

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

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

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

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

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

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

    Use the following settings:

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

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

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

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

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

    Bulk: 14.4V
    Float: 13.5V

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

    Bulk: 14.2V
    Float: 13.5V

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

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