I forbindelse med 3A001.e.1. beregnes ’energitætheden’ (Wh/kg) som den nominelle spænding ganget med den nominelle kapacitet i amperetimer (Ah) divideret med massen i kg.
For the purpose of 3A001.e.1.,’energy density’ (Wh/kg) is calculated from the nominal voltage multiplied by the nominal capacity in ampere-hours (Ah) divided by the mass in kilograms.