2720 Manufacture of batteries and accumulators

272011 Primary cells and primary batteries 272012 Parts of primary cells and primary batteries 272021 Lead-acid accumulators for starting piston engines 272022 Lead-acid accumulators, excluding for starting piston engines 272023 Nickel-cadmium, nickel metal hydride, lithium-ion, lithium polymer, nickel-iron and other electric accumulators 272024 Parts of electric accumulators including separators