CyberPower RB1270X10 Replacement Battery Cartridge - 10 X 12 V / 7 Ah Sealed Lead-Acid Battery, 18MO Warranty

Delivers a long lasting charge with the capacity of 7000 mAh 12 V DC battery can be used as a convenient spare, giving you peace of mind It can be chained with multiple battery packs for extended run operation Once installed, it requires low maintenance