GE E1410SW Digital Camera Battery Lithium-Ion (800 mAh) - Replacement for Olympus LI-40B, LI-42B Battery Replacement battery for the Olympus LI-40B, 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