The Valken 11.1v 1300mAh Stick Type Lipo airsoft battery is a high performance lithium airsoft gun battery. This lithium battery has an initial burst discharge rate of 50C, and a constant discharge rate of 25C. This Lipo battery has no memory effect, and does not require discharging. This stick Lipo battery can hold a charge for months, and features a small Tamiya plug and XH 4-pin charging connector. They fit inside most full stock battery compartments.