This is a 3.7V 450mAh Lithium Polymer Rechargeable Battery also known as Lipo or Lipoly batteries. Having a wide range of applications, this Lipo batteries are thin, light, and powerful, and widely used in GPS, DVD, Tablet PC, Bluetooth speakers, IoT devices and other small portable devices. Specifications: Voltage: 3.7 V Capacity: 450 mAh Battery Chemistry: Lithium Polymer Battery Type: Rechargeable Power Battery