Lg Battery Replacement Bl-49Sf 3.7V 1500Mah Li-Ion Battery Features LG Bl-49SF 3.7V 1500 mAh Li-Ion Battery - 5.55 watt Specifications Voltage: 3.7 V Watts: 5.55 W : 1 Year Dimension 0.197" H x 1.93" W x 2.72" L Weight: 0.13 lbs