SDCGAS303 Lithium-Ion Battery - Rechargeable Ultra High Capacity (7.4V 900 mAh) - Replacement for Panasonic CGA-S303 Battery Replacement battery for the Panasonic CGA-S303, Lithium-Ion (Li-ion) 7.4V (900mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark