SDCGRD54 Lithium-Ion Battery - Rechargeable Ultra High Capacity (7.4V 6000 mAh) - Replacement for Panasonic CGR-D54 Battery Replacement battery for the Panasonic CGR-D54, Lithium-Ion (Li-ion) 7.4V (6000mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark