NEW BREAK THROUGH TECHNOLOGY RECHARGEABLE BATTERY SUPER Large Battery Capacity Innovative 8x 3300mAh NiMH Cell Constructed High-Drain Type means high power output for your AEG Rechargeable Battery with Large Plug NOTE: NO DISCHARGING REQUIRED, just charge every time you play For Airsoft AEG Brand with CUSTOM Large Battery Compartment Also suitable for Battery Operated Remote Control Car, Tank, Boat & Plane NOTE: MODIFICATION REQUIRED ON BATTERY COMPARTMENT