Compact and lightweight design capable of fitting in most AK models 1600 mAh capacity outlasts many other batteries on the battlefield Mini Tamiya connector makes it compatible with most AEGs In the Box 1X battery Specifications: Chemistry NiMHVoltage 8.4VCapacity 1600 mAhConfiguration NunchuckNumber of Cells 7 CellsConnector Small Tamiya FemaleWeight 5.9 oz. California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov