How Different from Battery? Battery internal supply of fuel and oxidizer Significance: must be replenished/ recharged EX: Alkaline cell(primary battery discharge and discard Car battery(primary and secondary) discharge(primary and recharge(secondary)How Different from Battery? Battery internal supply of fuel and oxidizer Significance: must be replenished/recharged EX: Alkaline cell (primary battery) • discharge and discard Car battery (primary and secondary) • discharge (primary) and recharge (secondary)