A portable battery or accumulator is any battery, button cell, battery pack or accumulator that is sealed, can be hand-carried, is neither an industrial battery or accumulator nor an automotive battery or accumulator.
Prenosna baterija ali akumulator je baterija, gumbasta celica, baterijski sklop ali akumulator, ki je zapečaten, je ročno prenosljiv in ni niti industrijska niti avtomobilska baterija ali akumulator.