The OM System (formerly Olympus) LI-92B lithium-ion battery with 1,350 mAh. The battery can be charged with the optional UC-90 charger. LI-92B Lithium Ion rechargeable battery (1350 mAh) for SH-50, TG-1, TG-2, TG-3, TG-4, TG-5, TG-6, DS-9500, XZ-2, SP-100EE