7340mah battery replacement, FCC, CE, and RoHS certificated. Li-Polymer, Volts: 3.76 Capacity: 7340mAh/27.62WhBattery Replacement Kit Compatible for Apple iPad Air 2 A1566, A1567 on the iPad Air 2 Wi-Fi + Cellular.For optimal performance, calibrate your newly installed apple iPad air 2 battery by draining the battery below 10%, then giving it a full charge to 100% and repeat about 3~5 times.Grade A+ battery cells, 0 cycles, built to last up to 500 charging cycles. New battery, made under strict quality control, CE and ROHS certified. HDCKU replacement battery for iPad air 2 has a built-in special microchip that monitors temperature and input to protect your iPad from over-charging, over-discharging and over-heating.It’s better to use the OEM cable and charger to charge it.In the beginning, the battery will drain quickly, this issue is caused due to the li-ion of a new battery is unstable and it will become normal after long-term use.HDCKU offers a one year warranty.