The Tenergy Smart Universal Charger for NiMH / NiCd Battery Pack 8.4V - 9.6V airsoft batteries. This is only for charging non-lipo batteries that are 8.4v - 9.6v ONLY. This is a simple basic smart charger with an automatic on/off green light to indicate the battery is done charging. It will stop charging once it's fully charged up. This is a basic non-fast smart charger. Includes Tamiya adapter for large or mini type batteries.