The Valken 6v-12v NiMh airsoft battery charger is a smart charger for NiMh or NiCd batteries with 5-10 cells. The NiMh battery charger comes with a current switch to select charging rate, and includes a large female Tamiya to mini male Tamiya adapter. The NiMh charger also has a status LED letting you know when the battery is fully charged, and automatically stops charging with Delta Peak Detection. The airsoft charger also features automatic voltage detection, and uses pulse and negative pulse technology to avoid battery overheating. These airsoft battery chargers also come with reverse polarity and short circuit protection built in, as well as over-charge and over-current protection. We recommend our Valken NiMh airsoft batteries when using this NiMh charger.