CS 240Ah 12V Lithium LiFePO4 marine / boat battery

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  • €1.974,96
  • Normal price €2.506,40
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240Ah lithium battery as a full lead battery replacement for your boat, as a supply or electric drive battery!

The CS-Electronic DeepC-Power LiFePO4 battery is a rechargeable lithium-iron-phosphate battery with a built-in battery management system (BMS) specially designed for boats or power drives. 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 or drive 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 proof
  • Replaces a 12V / 480Ah lead battery
  • Built-in BMS
  • Very light weight, only 28kg
  • Fast chargeable
  • NEW: Optimized software for parallel connection with large battery banks
  • NEW: "Alternator-Protected" no additional electronics required to protect the alternator
  • NEW: including battery pole adapter -serrated & nickel-plated-
  • High intrinsic safety, LiFePO4 cannot burn!
  • Can be used in all positions
  • Temperature stable
  • Over 3000 cycles at 90% discharge
  • Service life up to 10 - 20 years
  • 100% maintenance free
  • Environmentally friendly, no lead, no acid
  • Recyclable!

The lithium iron phosphate battery (LiFePO4) is the safest of the family of lithium-ion battery types. 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 single cells connected in series and 2 connected in parallel, 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)
  • The boat is charged using standard lead or acid chargers with a charging end 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 off
  • The battery has M8 screw connections as standard, which can optionally be equipped with our extra-light pole adapters
  • No change to the boat or the additional electronics is required to use the battery
  • Thanks to the low level of self-discharge, a closed battery can be stored for up to 12 months without any problems
  • You can connect any number of batteries in parallel for more capacity
  • 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
Important functions of a battery management system:

  • Overload protection
  • Deep discharge protection
  • Overvoltage protection
  • Active cell balancing
  • Load monitoring and control
  • Cell thermal protection
  • BMS temperature protection
  • Short circuit protection

Here you will find the pole adapter.

CE: General operational safety
UN38.3: Tested transport safety in traffic
RoHS: Tested material safety
Warranty: 5-year manufacturer's guarantee

Technical data:
Model: CSX12240-BMS200M
Type: drive battery, supply battery
Nominal capacity: 240Ah
Energy content: 3072 Wh
Cell technology: Lithium iron nanophosphate LiFePO4
Cell type: Big-Capacity-PrismaticCells (BCC)
Replaces a: 12V / 480Ah lead-gel battery
Application: 12V installations, electric drives, solar
Application in parallel circuit: Yes, any number of the same type possible
Application series circuit: Yes, 24V, 36V and maximum 48V possible
Operating voltage: 9.2 - 14.4V
Rated voltage: 12, 8V
Lifetime: = 10 years
Cycle time at 50% DoD: = 5 000
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: 200A / 1C
Standard charging current: 100A / 0.5C
charging current for max.Service life: 70A / 0.33C
Continuous discharge current: 200A
Peak discharge current (3-5 sec): 400A
Maximum inverter power : to 2560W
End of discharge voltage: 9.2V
Temperature range (discharge): -20°C to +65°C
Temperature range (charging): 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 or cone
NEW: protection class: IP67 water & dust protected
weight: 28.0kg
Dimensions (WxDxH): 520 x 268 x 220 mm
NEW: Manufacturer's warranty: 5 years

Recommendation for:
supply battery
drive battery for outboard engines
drive battery for e-boats

Scope of delivery:
1 x LiFePO4 DeepC Power B atterie
1 x battery pole adapter / battery terminals / M8 screw terminals with screw lock - serrated & nickel-plated-
1 x operating instructions