9.6v 2200mah Elite 4/5 Large Battery (NiMH) Constructed of Nickel Metal Hydride, this battery is a great purchase for the intermediate to advanced airsoft player. The chemistry of its construction makes it low maintenance and cheap on the pocket. This battery can typically go through 300 charging cycles before losing efficiency and eventually becoming useless for airsoft skirmishes. Also it only requires discharging for the first 8 cycles of use, after that it can be topped off as needed. Because of the higher voltage this battery will turn over a motor much faster and put greater strain on the internal components of your non-stock AEG. This battery is not recommended for non-upgraded guns such as stock Tokyo Marui. However, it is recommended for most Classic Army guns and others that shoot over 350 fps out of the box. This battery will fit in most full-stock AEG rifles, but may rattle around a bit if not properly secured. It will fit best in 416 style short stocks that require a higher voltage, but can't fit a full size large battery. Remember to recycle this battery instead of throwing it in the trash! Note: Use of this voltage battery with non-upgraded (stock) Japanese AEGs like Tokyo Marui, will cause damage to your AEG if not monitored properly. Therefore we DO NOT recommend this battery for use in Japanese AEGs.