This battery is very compact and makes it ideal for squeezing into tight places like PEQ boxes, external battery bags/cases and small skeleton stocks, like the ones found on the Honey Badgers' stock. The battery supplies a 20c discharge rate and is rated at 1500mAh meaning you should only need one for a full days' play, however, a second is advised. 

Features:
7.4v
1500mAh
20c rating
Ideal for a PEQ battery box