batteries convert chemical energy to electrical energy
chemical_energy is energy. battery is device_stores_energy_chemically. battery is electrical_device. lead_acid_battery is rechargable_battery. battery is electrical_component. battery_recharger is electrical_device. lithium_ion_battery is rechargable_battery. lithium_ion_polymer_battery is rechargable_battery. chemical_energy is potential_energy. rechargable_battery is battery.