Replacement battery for Apple iPad Air / iPad 5(A1474,A1475,A1476,A1484), supports all versions (Wi-Fi or Cellular).KUBOM 8827mAh, 3.73 V, 32.9Wh battery designed for charging faster, lasting longer, and have a high power density for more battery life.KUBOM li-ion battery uses fast charging to quickly reach 80% of its capacity, then switches to slower trickle charging. There are a lot of repair guides on Youtube (search 'iPad Air battery replacement'). Be careful, using a hairdryer or a heat gun to heat the frame when you disassemble the screen, or you may break the screen.Before resealing your iPad, test the battery with the original cable and charger (support 5V, 2.1A).KUBOM offers 18 Month warranty.