The Valken 11.1v 1000mAh Stick Type Lipo airsoft battery with T-Connector (Deans) is a high performance lithium airsoft gun battery. 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 Deans plug and XH 4-pin charging connector. They fit inside most buffer tubes and crane stocks.