Description: Compatible with: Cubot X16 X17 Output Voltage: 3.8V Capacity: 2500mAh Built-in Type: Li-Ion Package included: 1 X Original 2500mAh Cubot X16 X17 Battery Note: 1, This is NOT an easy job for someone who has no technical skills with Disassembling or Assembling mobile\/cellphones. So only purchase this item if you know how to install it. 2, We will not be held responsible for any damages to your mobile\/ cellphones that you may cause during the changing of replacement parts. 3, Special skill and techniques required for proper installation. Think twice before you disassemble your phone.