Description: Very suitable for your mobile phone, can solve the problem of mobile phone suddenly without electricity for you. Ii is the best choice for back-up power. Type: Li-Ion Output Voltage: 3.8V Charging voltage limit: 4.2V Capacity: 1400mAh (This capacity is 1400mAh from 2015.7.30, the real capacity is the same.) Compatible with: Mpie Mini 809T Smartphone Package Included: 1 x 1400mAh Battery for Mpie Mini 809T More Details: