BLU Studio 5.5S D630U D630L C786340235T Aksberry(R) 2350mAh High Capacity Li-ion Mobile Phone Battery Compatible Model: Blu Studio 5.5S D630 C786340235T Brand new and high quality battery. Integrated microchip inside prevents overcharging and lengthens battery life. Use the authorized charger only. If you don't use the battery for a long time, please put it in a dry and cool place and make it full charged once every three months.