Samsung BEX300HSEB/STD Battery by Amstron is designed for use with Samsung SCH-A650 cell phone models. Amstron cell phone batteries are precision-Engineered and rigorously tested for voltage, Capacity, compatibility, and safety to exceed original quipment manufacturer pecifications. • Chemistry: Li-Ion • Ratings 3.7 Volts 900mAh Capacity • Warranty: 4 Years