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Model No IFM12-400E2
Selling Unit EACH
Description Drypower IFM12-400E2 12.8V 40Ah Lithium Iron Phosphate (LiFePO4) Rechargeable Lithium Battery
Chemistry Lithium Iron Phosphate
Voltage 12.8V
Nominal Capacity 40000mAh
Maximum Continuous
Discharge Current
Brand Drypower
Termination M8 Bolt
Width 130mm
Height 182mm
Length/Breadth/Depth 195mm
Weight 5500g
Weight(kg) 5.500
12V Lithium Iron Phosphate battery. Ideal for sealed lead battery replacement
  • High capacity - rated at 5 hour discharge rate against lead acid rated at the 20 hour rate. For example a 26Ah lead acid battery (20 hour discharge rate) is approximately only 22Ah at the 5 hour discharge rate.
  • Low weight, approximately one third of a similar capacity lead acid battery.
  • Deep cycle, recharges up to 2000 times at 80% depth of discharge. That's 4-8 times better than a lead battery's cycle life dependant on usage conditions.
  • Fast Charge, able to accept higher charging currents all the way to charge termination. No float or trickle required.
  • Inbuilt Protection Circuit Module, protects against over-charging, over-discharging, over-current, external short circuit, incorrect charger use. Beware cheap imitations that lack a protection circuit or only use BMS cell balancing upon charging.



Click the links for the downloadable Drypower Lithium Catalogue and the Drypower Frequently Asked Questions (FAQs) .

CAUTION: A dedicated Lithium Iron Phosphate charger is required. Do not use non appropriate chargers or chargers used for other battery chemistries.

We recommend using charger model:

  • FY1503000 (14.4V 3A)  
  • FY1506000 (14.4V 6A).

In larger capacity models where a higher charge current is accepted, we also recommend charger model FY1509900 (14.4V 9.9A). A ring terminal to Anderson adaptor cable (part no. CE081E) may be required for use with this charger. Adaptor cable is sold separately as optional extra.

PLEASE NOTE many sellers new to the lithium battery industry are claiming lithium iron phosphate batteries can be properly charged with lead battery chargers. This is incorrect. Please use chargers specifically designed for charging lithium iron phosphate batteries or batteries may not fully charge and/or battery life may be significantly reduced.

Additionally, this battery contains a lithium ion battery protection circuit module (PCM). The PCM further enhances the safe usage of this battery in comparison to non-protected rechargeable lithium batteries. We recommend when this battery is used in multiple packs for series or parallel connections that individual chargers are used for each battery. Charging multiple battery arrays as a single battery pack may trigger the PCM inside one or more of the batteries that could lead to capacity miss-match in the array that could reduce performance of the complete battery pack array. Please consult us for further information and technical advice.

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