AN/PEQ-15 Battery Case with 11.1V 1300mAh 12C Lithium Battery (KA-BAT-19). It is also compatible with 1400mAh 9.6V / 10.8V battery. Will fit standard 20mm rail.
WARNING: LiPo batteries can be very dangerous if not handled properly. LiPo batteries should not be completely discharged otherwise the battery is rendered ineffective and recharging it can be dangerous. You MUST use a proper LiPo capable charger and a cell balancer to charge these batteries.
We recommend the following: Onyx Charger and the Load Balancer
Use at your own risk.