Mighty Max Battery 8.4V 1600mAh Butterfly Replaces AK SR-25K Carbine AEG + 8V Charger brand product 8.4V 1600mAh NiMH BATTERY Fit Models: Most Airsoft Mini AK series, upgraded and/or modified AEG's Rapidly charge ande had a long life cycle span INCLUDES 8.4V-9.6V SMART CHARGER