| Classification of Products (CZ-CPA_2015) - level 4 - Class | 2720 | Batteries and accumulators | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 6 - Sub-category | 272021 | Lead-acid accumulators for starting piston engines | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 6 - Sub-category | 272022 | Lead-acid accumulators, excluding for starting piston engines | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 6 - Sub-category | 272023 | Nickel-cadmium, nickel metal hydride, lithium-ion, lithium polymer, nickel-iron and other electric accumulators | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 6 - Sub-category | 272024 | Parts of electric accumulators including separators |