HPA 7.4v 300MaH Lipo Brick with JST connector. We have created the best Lipo batteries available in the airsoft industry to power the FCU in all your HPA engines . The combination of our High Power Airsoft BB & Batteries is the perfect way to enhance your guns performance. 

• Battery Type: Lithium-Polymer
• Voltage: 7.4V 
• Milliamps: 300mAh
• Fits: Most M4 Buffer Tubes & Crain Stocks, M4 Pistol Grips, G36, Scorpion Evo, Mp7, & AK47 Receiver, Scar-H 
• Battery C Rating: 30C / 50C Burst
• Connector Style: JST with JST-XH
• Will fit in a buffer tube