Description: It is the best choice for back-up power. It is very suitable for your mobile phone， can solve the problem of mobile phone suddenly without electricity for you. Type: Lithium-ion Output Voltage:3.7V Capacity: 2350mAh Compatible with: Samsung Galaxy S4 Mini i9191 i9198 Package Included: 1 x 2350mAh Battery for Samsung Galaxy S4 Mini i9191 i9198