Infinuvo Replacement Battery for Hovo 510 Series and Compatible Robotic Vacuums. 14.4V, 2200mAH, NIMH Rechargeable Battery. PREMIUM BATTERY: High quality premium Infinuvo replacement battery for Hovo 510 series robotic vacuums COMPATIBILITY: Also works with robot vacuum cleaners, bObi Pet. NOT to replace bObi LI Series battery (see ASIN: B07FGFK5YN). For 2-wire battery see ASIN: B01M7PXZBP LONG RUN TIME: 2200 mAH high capacity battery provides about 30% longer run time than the 1700mAH battery used in bObi Classic model. This battery is for your unit serial number third set end with 00(SS00I, RS00). Buy other parts via ASIN #: B07FZWMTGM, B00IX3N63Y, B07GSM5GCH