CS 20Ah 12V Lithium LiFePO4 Caravan / Motorhome Battery

Product number: CSX12020-BMS100C
EAN: 4250561723603

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20Ah lithium battery as a fully-fledged lead-acid battery replacement for your mobile home

The CS-Batteries DeepC-Power LiFePO4 battery is specially designed for mobile homes. With the new lithium-iron technology, you can replace your previous lead-gel or AGM battery quickly and easily for the first time.

The ultra-light DeepC Power battery can be used purely as a supply battery and can be briefly loaded up to 400A. The significantly lower weight, the long operational reliability, the long service life and the long service life are decisive advantages over conventional batteries of old technology.


  • High current resistant
  • Replaces a 40Ah lead-acid battery
  • Built-in BMS
  • Very light weight
  • Capable of fast charging
  • High intrinsic safety
  • Can be used in all positions
  • Temperature stable
  • Frost cell control
  • Over 3000 cycles at 90% discharge
  • lifespan up to 10 - 20 years
  • 100% maintenance free
  • Environmentally friendly, no lead, no acid
  • Recyclable!

Within the family of lithium-ion battery types, the lithium iron phosphate battery (LiFePO4) is the safest. It can withstand high currents, can be used universally and is lighter than lead, gel or AGM batteries. In addition, the latest lithium-iron technology offers a high degree of intrinsic safety, so that there is no risk of explosion even under the most extreme conditions. A 12.8V LiFePO4 battery consists of 4 individual cells connected in series, each with a nominal voltage of 3.2V. A built-in battery management system (BMS) also protects the battery cells from damage.

Advantages of our LiFePO4 DeepC-Power battery compared to lead batteries:

  • High discharge currents possible up to the specified capacity
  • Due to the up to 60% lower weight, more payload is possible
  • Due to the smaller space requirement, more capacity can be carried in the same space
  • Up to 10 times longer service life due to the high number of cycles of the LiFePO4 technology
  • Extremely fast charging of the cells possible
  • Complete discharge of the specified nominal capacity possible
  • The battery is protected by a battery management (BMS)
  • Charging in the mobile home is carried out using common lead or acid chargers with a final charging voltage of 14.6V
  • The battery is winterproof and does not have to be removed down to -20°C
  • Delivered fully charged, install and drive
  • The battery has M8 screw connections as standard, which can optionally be equipped with our extra-light pole adapters
  • No modification to the mobile home or additional electronics is required to use the battery
  • Due to the low self-discharge, a closed battery can be stored for up to 6 months without any problems
  • For more capacity, you can connect any number of batteries in parallel
  • For more voltage you can connect up to 4 batteries (maximum 48V) in series

Battery Management System (BMS)
A battery management system monitors and controls the individual cells of a battery and protects them from damage.
Key functions of a battery management system:

  • Overload protection
  • Deep discharge protection
  • Overvoltage protection
  • Active cell balancing
  • Load monitoring and control
  • Cell temperature protection
  • BMS temperature protection
  • Automatic intelligent charging control from 0°C cell temperature
  • Short circuit protection

Here you will find the right pole adapter

CE: General operational safety
UN38.3: Tested transport safety in traffic
RoHS: Tested material safety
GUARANTEE: 5 years manufacturer guarantee

Technical data:

Model: CSX12020-BMS100C
type: supply battery
nominal capacity: 20Ah
energy content: 256 Wh
cell technology: lithium iron -Nanophosphate LiFePO4
Cell type: Big-Capacity-PrismaticCells (BCC)
Replaces a: 40Ah lead-gel battery
Application: 12V installations
Use of parallel connection: Yes, any number of the same type possible
Application of series connection: Yes, 24V, 36V and a maximum of 48V possible
Operating voltage: 9.2 - 14.4V
Rated voltage: 12.8V
Service life: = 10 years
cycle duration at 50% DoD: = 5000
cycle duration at 80% DoD: = 3500
cycle duration at 90% DoD: = 3000
Charging programs: CCCV / IU / IUoU
End of charge voltage: 14.6V
Maximum charging current: 20A / 1C
Maximum continuous charging current: 10A / 0.5C
Charging current for max. service life: 6.6A / 0.33C
Continuous discharge current: 200A
Peak discharge current (3-5 sec.): 400A
Maximum inverter power: to 2500W
End of discharge voltage: 9.2V
Temperature range (discharge): -20°C to +65°C
Temperature range (charge): 0°C to +50°C
Temperature range (storage): -20°C to +65°C
Battery Management System (BMS): Yes, built-in
Balancer: Yes, active balancer
Self-discharge: 1-2% / month
Installation position: any
Connection: M8 Screw
Protection class: IP65 water & dust protected
Weight: 3.9kg
Dimensions (WxDxH): 260 x170 x 220 mm
NEW: Manufacturer's warranty: 5 years

Recommendation for:
camper vans

Scope of delivery:
1 x LiFePO4 DeepC-Power battery
1 x instruction manual


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