NEW BREAK THROUGH TECHNOLOGY RECHARGEABLE BATTERY – Mini AK Type Stick Type Battery with Large Battery Capacity – Innovative 1600mAh NiMH Cell Constructed – High-Drain Type means high power output for your AEG – Minimum 2600rds per each full charge at Full Auto shooting mode – Ready to install on ALL Airsoft AEG that accommodate AK type battery (NO MODIFICATION NEEDED) – RC Magazine recommended for the best choice battery – Rechargeable Battery with Mini Plug – NOTE: NO DISCHARGING REQUIRED, just charge every time you play