SpecificationsBrand: K2 EnergyOutput Voltage: 24VAmperage: 2AhChemistry: LiFePO4Length: 5.Put the batteries in fire-proof container in chargingNever leave batteries unattended when chargingDo not put batteries on wood surface or carpet when chargingNeed more than one K2 Energy K2C24V2A Lithium Iron Phosphate Charger? It provides short circuit protection as well as over current protection.5 in. The charger is also light weight making it portable and easy to carry.