Laza Zcell 1750mah 2x Battery + Travel Charger + Case for Samsung Sprint Epic 4g, Galaxy S, Fascinate, At&t Captivate, At&t Focus i917, T-mobile Vibrant, ATT Focus i917, I9000, I897, T959, Epic High Quality Battery for the Samsung Galaxy S i9000 series, Sprint Epic 4G, Verizon Fascinate (see note in production desc), AT&T Captivate i897, AT&T Focus i917, T-mobile Vibrant t959 Easily swap your battery when your charge is low. Never run out power again when at work, school, vacation or out with friends. The battery has an integrated microchip to prevent overcharging and lengthens battery life. Excellent quality at a great price. The charger will keep your extra batteries charged for when you need them. The smart led shows charging status. Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock. Charger is designed with a folding A/C for easy travel. 2 x 1750 mAh Battery and 1 x Universal Wall Dock Charger. Do not need to change back cover