Features:Mini 602030 3.7V, 300mAh rechargeable Li-Po battery.Miniature design, light weight and portable.High quality and durable, with large capacity of 300mAh, less worry about battery's going dead within a short time.Provides excellent continuous power sources to your device, features high energy density and extra long lifespan.Built-in smart protective PCB charging module, effectively prevents over charging, over discharging, over current, short circuit.Specification and high qualityModel: 602030Type: Lithium batteryCapacity: 300mAhRechargeable:YESCharging Voltage: 3.7V-4.2VRated Voltage: 3.7VWorking Temperature: -10-50Dimensions(L x W x H): About 30x20x6mmPackage include :1 x 602030 300mAh Li-polymer BatteriesNote:Please be aware that due to your computer monitor display the color may have some difference between the picture and the real item.There is 2-3% difference according to manual measurement.