Wholesaler custom 12v 400ah deep cycle lithium ion battery

Nominal voltage: 12.8V
Brand name: Keheng OEM
Model Number: KH-LFP-12400B
Price: Get it by email
Support: wholesale, OEM.ODM
Warranty: 10 years

Wholesaler custom 12v 400ah deep cycle lithium ion battery

Wholesaler custom 12v 400ah deep cycle lithium ion battery heralds a new era in lightweight, high-performance energy storage, meticulously crafted in China to replace traditional lead-acid batteries in a multitude of applications. Its versatility makes it ideal for medical equipment, and power tools and serves as an exceptional upgrade for SLA (sealed lead-acid) batteries. Additionally, it seamlessly integrates into UPS systems, exit devices, alarm systems, and emergency lighting.

This battery encapsulates the future of energy storage technology, leveraging the innovative LiFePO4 composition to yield remarkable efficiency and an extended lifespan—approximately 3-4 times longer than traditional lead-acid alternatives. Charging becomes a swift affair, with the average lithium battery reaching a full charge within a mere 5-6 hours. Further distinguishing itself, this lithium battery is void of lead or acid, emits no harmful gases, and provides safeguards against short circuits, overcharging, or over-discharging.

The ALL New 12 Volt Lithium Battery brings a host of features and benefits:

  • Extended battery life—lasting 5-10 times longer than traditional lead-acid batteries
  • Easy installation—can be mounted in any orientation
  • Swift charging—reaching full capacity in approximately 4-6 hours
  • Lightweight—half the weight compared to lead-acid batteries
  • Compatible with existing charging systems
  • Enhanced safety—eliminating risks of explosion, firing, and leakage
  • Low self-discharge
  • Equipped with BMS Protection for optimized performance
  • Exceptional thermal stability
  • Inclusion of a built-in SOC Meter
  • Safeguards against short circuits, overcharging, and over-discharging
  • Environmentally safe—free of poisonous lead, acid, heavy metals, and emissions during charging, featuring a factory-sealed design

The Wholesaler custom 12v 400ah deep cycle lithium ion battery stands as a testament to the uncompromising commitment of the world’s leading supplier of deep-cycle batteries for nearly 20 years. Backed by exceptional customer support, this 12-volt 4000Ah battery offers a high-capacity, efficient, and adaptable energy storage solution. Whether employed in off-grid solar systems, recreational vehicles, backup power setups, or industrial applications, rest assured that this battery is a reliable and enduring answer to your energy storage needs.



Is it possible to fast start a lithium battery?

Are lithium-ion batteries dangerous?
Lithium-ion batteries are an effective and powerful alternative to other battery options such as lead-acid batteries and are increasingly replacing them due to their many benefits. Despite the increased use of lithium-ion batteries, there are certain areas, such as battery storage, where lithium-ion batteries do not have clear public regulations. In other areas, such as the transportation of these batteries, organizations such as the U.S. Department of Transportation (DOT) have labeled lithium-ion batteries as a hazardous material and regulate them under their Hazardous Materials Regulations (49 CFR, 171-180). This hazardous designation for all lithium-ion batteries is due in large part to the fact that regulatory agencies have not kept up with advances in lithium-ion battery technology. When these regulations were written, lithium cobalt-based battery chemicals, such as lithium cobalt oxide (LCO) and lithium nickel cobalt aluminum oxide (NCA), were the primary lithium battery chemicals. Lithium cobalt batteries are indeed dangerous because they use the toxic substance cobalt and lack strong covalent bonds, making them susceptible to thermal runaway and fire, unlike non-cobalt-based lithium battery chemistries such as lithium iron phosphate (LFP), which is exclusively offered by RELiON, in part because they are less susceptible to thermal runaway and can therefore be safely stored and used in a wider range of locations. However, despite the fact that it is lithium cobalt-based batteries, and not other lithium battery chemistries such as lithium iron phosphate, that are hazardous, current regulations simply categorize all lithium ion battery chemistries as hazardous. Therefore, each type of lithium chemical battery must comply with applicable regulations when it comes to hazard protection.

What are the safety standards for lithium batteries?
Testing standards for lithium-ion batteries have been developed to ensure the safest batteries for public and private use. Dozens of tests are mandated by international and national regulatory agencies such as the United Nations, Department of Transportation, International Air Transport Association (IATA), and Transportation Security Administration (TSA). Some of the most important standards for lithium-ion batteries are: IEC 62133: Tests for Chemical and Electrical Hazards | UN/DOT 38.3: Tests for Eight Transportation Hazards | EC 62619: Tests the Safety of Lithium-Ion Batteries for Industrial Equipment (e.g., Automated Guided Vehicles, Forklift Trucks, Railroads, and Marine Uses) and Electronic Equipment | UL 1642: Tests the Safety of Lithium-Ion Batteries for Use as Power Supplies for Electronic Products UL 1642: Tests the safety of lithium-ion batteries used to power electronics | UL 2580: Tests lithium-ion batteries used in automobiles

What are the rules for testing lithium-ion batteries?
The federal regulations pertaining to lithium-ion batteries (49 CFR § 173.185) clearly state that these batteries need to comply with all of the standards set forth in the United Nations Manual of Tests and Criteria before they can be approved for sale and use. These standards include a number of tests that all lithium-ion batteries are required to pass. Some of these tests include tension tests, flash point tests, flow rate tests and metallic material tests. These tests must be used to evaluate each lithium-ion battery that is manufactured in order to be considered safe for transportation and use. lithium-ion battery manufacturing companies such as RELiON are also required to keep clear records of the completion of all tests, which can be seen in batteries such as the RELiON LFP batteries, which have passed basic tests such as UL 1642.

What are the rules for packaging lithium-ion batteries?
Lithium-ion batteries need to be packaged in a specific way to be considered safe. To ensure this safety, packaging rules require that lithium-ion batteries be placed in non-metallic inner packaging to ensure that the batteries are kept away from any contact with other conductive devices, such as metal.

What are the rules for shipping lithium batteries?
Lithium-ion batteries can pose problems due to the presence of corrosive or flammable electrolytes. Due to the high energy density of lithium-ion batteries, the possibility of overheating exists. This can be mitigated in many ways when the battery is designed and assembled correctly, but if not transported correctly, even the best-designed lithium-ion batteries can face overheating and accidental ignition. To ensure that this is avoided as much as possible, both the Department of Transportation and the Transportation Security Administration (TSA) have established specific rules for the transportation of lithium-ion batteries. These rules generally restrict the manner and extent to which lithium-ion batteries can be transported, particularly the private transportation of these batteries on public transportation modes.



  • 12V 120AH deep cycle lifepo4 lithium power Low temperature self battery for RV/marine/golf cart/ scooter / solar storage /agm & amr/EV
  • The working temperature can reach -20°C
  •  LCD display optional, real-time understanding of battery voltage and capacity.
  •  100A continuous output current can continuously charge big-power devices.
  •  The intelligent BMS system can accurately control the battery to improve the lifespan, no explosion, no fire.
  •  Drop-in replacement for heavy lead-acid(AGM / GEL) battery,1/3weight but same capacity.
  • 2000times cycle life@100% DOD , 7000times cycle life@50% DOD , 10 years design lifespan.
  • Maintenance-free, fully sealed, and waterproof.


Intelligent Battery Management System(BMS)

  • Over charge protection function
  • Over discharge protection function
  • Over current protection function
  • Short protection function
  • Over temperature protection function
  • Automatic cell balance function


Technical data

Nominal Voltage 12.8V
Rated Capacity 400AH @0.5C to 10.8V
Stored energy 1536Wh
Cycle life@100%DOD 2000+ Cycles
Approx. Weight 14kg
Internal Resistance ≤35.0 mΩ
Max. Charge Current 100 A
Max. Discharge Current 400A
Charge Cut-off Voltage 14.6V
Discharge Cut-Off Voltage 10.8V
Dimensions L260mm×W180mm×H247mm
Low temperature self heating Avaliable(0~-20°C)
Operating Temperature Range





-4°F (-20°C) to 113°F (45°C)

-4°F (-20°C) to 140°F (60°C)

59°F (15°C) to 95°F (35°C)

Self-Discharge Rate ≤3%/month
Life Expectancy (years) 15 years @25°C in 80%DOD
Self Discharge Approx. 2% per month @ 25°C
Long Term Storage Charge every 6 months
Short Circuit Protection Automatically recover after removal of short
Terminal Type Female Copper Insert M8 (M8/mm)


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