11.1V 1000ma 25C Stick Battery  Fits in Buffer Tube Titan Made in USA. High quality lipo battery made specifically for high  performance airsoft AEG's.  Comes with a Deans Connector or Small Tamyia Connector. 

General Warning
Lithium Ion batteries store a tremendous amount of energy. While they can endure hard impacts and long, high-power drains, they do have their limits. If pushed too hard or used improperly, they can be very dangerous.

Store cells at roughly 30% charge in a cool, safe place away from anything flammable.
Use only a Lithium charger — both LiPo and Lithium Ion chargers will work fine.
Charge slowly and under supervision.
Discharge at the rated C-ratings with proper ventilation and cooling.
Treat batteries with respect — never short, crush, puncture, or otherwise abuse them.