lithiumEnergizer Ultimate lithium batteries are the longest-lasting batteries in the world and offer top performance for energy-intensive high-tech appliances. Productsmicro namebrandtypesystemvoltsdimensionsitem No.microEnergizer UltimateAAA / FR03lithium1.510.5 x 44.5300035mignon namebrandtypesystemvoltsdimensionsitem No.mignonEnergizer UltimateAA / FR6lithium1.514.5 x 50.53000659V-block namebrandtypesystemvoltsdimensionsitem No.9V-blockEnergizer Ultimate9V Block / 6FR61lithium9.026.5 x 17.5300225