Amazon.com: KUBOM for iPad Air 2 Battery Replacement, Full 7340mAh 0 Cycle Battery - Include Complete Repair Tool [A1566, A1567,A1547] : Electronics
iPad Battery
Apple A1934 A1979 A1980 A2013 iPad 8.3 iPad Pro 11 Replacement Battery: BatteryClerk.com Tablet
Amazon.com: REYTRIC A1376 Battery Replacement Compatible with iPad 2 2nd Generation A1395 A1396 A1397 with Tools 3.8V 25Whr : Electronics
Amazon.com: Kastar Battery for Apple iPad 2 (the 2nd Generation iPad) Replacement Internal Battery 3.8V 25Whr 6500mAh Fixes for Apple iPad 2 : Electronics
iPad mini retina has much bigger battery, teardown reveals - CNET
Replacement for iPad Air/iPad 5/iPad 6/iPad 7/iPad 8 Battery 8827mAh