3.7V 4000mAH (Lithium Polymer) 3Pin wire Lipo Rechargeable Battery also known as Lipo or Lipoly batteries are thin, light and powerful. This battery has a capacity of 4000mAH. These Batteries are widely used in GPS, DVD, Tablet PC, MP4 Player, Power Bank, Mobile Backup Power Supply, Bluetooth Speaker, IOT and other DIY and Industrial applications. Specifications:- Voltage: 3.7V Capacity: 4000mAH Approx Size: W -5.5CM, L- 8CM, H- 3MM Please Not its 3 Wire battery