Ofeely 3.7v 1200mah 804040 Polymer Li Ion Battery Lipo Rechargeable for GPS Tablet PC 100% brand new and high quality Lithium Polymer Li-Po rechargeable battery. It is full capacity and can last work more than 12 hours 2. One year warranty for all our batteries ! Fit for mp3, mp4, GPS Ipod Bluetooth Tablet PC and other device! Size: 8 mm(H) 40 mm(W) 40 mm(L) Built-in protection circuit PCM for prevent over charging or over discharging. Light weight, high capacity, and NO memory effect.