Powerextra 2 Packs Craftsman 13.2V 2000mAh Ni-CD Replacement Power Tool Battery for 11147 27493 315.22453 11064 11095 981090-001 981563-000 It is a kind of rechargeble replacement battery This battery can be charged with original battery charger High capacity (2000mAh) to ensure your machine runs longer Integrated microchip prevents overcharging & lengthens battery life Safeguard features against incorrect voltage, short circuit, internal overheating