Israel-based Epsilor Electric Fuel has begun full production of its 4.4 kWh Combatt ELI-52526-GM lithium-ion battery for military vehicles.
The 25.2 V battery provides 174 Ah of capacity in the standard NATO 6T form factor. Epsilor describes it as the highest-capacity battery in its category, although it has not supplied comparative test data with the announcement.
BESTmag reported on the battery in September 2025, when Epsilor was preparing to showcase the product. The latest announcement marks its progression into series manufacture.
The battery complies with the US Army’s MIL-PRF-32565C requirements and is designed for armoured vehicles, mobile command posts, tactical shelters, autonomous power systems and deployable weapons.
Its intended applications include silent-watch operations, during which onboard sensors, communications equipment, electronic-warfare systems and other electrical loads are operated while the vehicle’s engine is switched off. This reduces fuel consumption and the vehicle’s acoustic and thermal signatures.
Epsilor says the casing is designed for use in harsh military environments
The battery can also support hybrid vehicle architectures and other high-power military payloads. Epsilor said its ruggedised construction was designed for operation in harsh military environments.
Ronen Badichi, general manager and chief executive officer of Epsilor Electric Fuel, said: “Our goal was to redefine what users can expect from their 6T battery on the battlefield.
“Growing demand among our defence customers for higher energy 6T batteries pushed us to expedite production and we are proud to introduce this product ahead of schedule.”
Epsilor has not disclosed production capacity, customers or order volumes for the new battery. The announcement also does not identify its cell chemistry beyond lithium-ion; the company’s wider 6T range includes both nickel cobalt aluminium and lithium iron phosphate products.
The ELI-52526-GM will be exhibited at the MSPO International Defence Industry Exhibition in Kielce, Poland, on 8–11 September.
