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: Li-Ion Output Voltage:3.7V Capacity: 1800mAh Compatible with: LG Optimus 2X P990 Optimus 3D P920 Package Included: 1 x 1800mAh Battery for LG Optimus 2X P990 Optimus 3D P920