NEEWER&reg; Rechargeable NP-BG1 NP-FG1 Battery For Sony DSC W200 W90 W85 W70 W55 Li-Ion Battery for SONY NP-FG1 / BG1. Never run out of battery power when you're just about to capture the perfect moment! Time to get extra power for your digital video camera/camcorder. High capacity, rechargeable DC 3.6V Li-Ion Battery with premium cell. Latest Lithium Ion battery technology gives the best performance possible compared to other battery technologies such as Nickel Metal Hydride (Ni-MH). Best replacement for the original SONY NP-FG1 / BG1 battery pack.