Airsoft batteries come in a variety of voltages, milliamps and sizes. LiPo batteries require a balanced smart charger to properly charge. 7.4V batteries will give players a noticeable increase in rounds per second, but in turn will also wear down a AEGs internals faster. LiPo batteries are typically smaller in size but pack more of a punch than other batteries, so they are the ideal battery choice when looking for an increase in rate of fire, and tight fitments. Airsoft Megastore carries a wide selection of airsoft batteries, backed by our industry leading 110% LOWEST price guarantee!