l zinc alkali metal hydroxide manganese dioxide alkaline battery m (withdrawn) zinc alkali metal hydroxide mercuricoxide mercury battery n (withdrawn) zinc alkali metal hydroxide mercuricoxide, manganese dioxide p zinc alkali metal hydroxide oxygen zinc-air battery s zinc alkali metal hydroxide silver...
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used nimh batteries before being supplanted by lithium ion technologies. nickel-hydrogen batteries store hydrogen in the form of a gas rather than the solid metal hydrides of nimh cells. these batteries have a higher energy density and energy per volume than ni-cd but half as much energy per unit volume...