SDDBL20 Rechargeable Lithium Ion Ultra High Capacity Battery (3.7v 800mAh) - Replacement for Sanyo DBL-20 Battery Replacement battery for the Sanyo DBL-20, Lithium-Ion (Li-ion) 3.7V (800mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark