Tenergy Two 9.6V 1400mAh Flat NiMH Battery Packs for Mini AirSoft Guns Specially design for Airsoft guns for power intensity and long running time. Advanced NiMH battery technology, no battery memory effect. Easy operation, battery can be charged anytime without the need to fully discharge Built in Mini Tamiya Connector to fit with most Airsoft Electrical Guns Longer running time of over 20 minutes continuous firing