356090 3.7V, 3000mAh rechargeable Li-Po battery.With large capacity of 3000mAh, less worry about battery's going dead within a short time.Provides continuous power sources to your device, features high energy density and long lifespan.Built-in smart protective PCB charging module, effectively prevents over charging, over discharging, over current and short circuit.Portable emergence backup power, ideal batteries for DIY lovers!Type: Lithium batteryCapacity: 3000mAhRechargeable:YESCharging Voltage: 4.2VRated Voltage: 3.7VWorking Temperature: -20° approximately 50°Dimensions(L*W*H): About 90x60x3.5mm/3.54x2.36x0.14Widely used for MP4, MP5, GPS, power bank, remote controller, mobile phone, E-book, tablet, laptop, portable printer, fingerprint machine, POS machine, for psp, PC, Bluetooth speaker, digital camera, , portable DVD, MID, PAD, PDA, solar lamp, electric toys or other compatible devices powered by batteries with the same size and capacity.Package:1/2/4 xBatteries''