ProTek RC 2S LiPo Receiver Battery Pack (7.9V/2300mAh)
PTK-LP-RX2300L-2S
This is a Li-Poly Light weight 2300mAh receiver battery pack is designed to power the electronics of 1/10th & 1/8th scale nitro powered race cars. There are many advantages to using a Li-Poly receiver battery, but the
biggest advantage is that the battery voltage to your receiver and
servos will remain constant throughout the race with the use of a
voltage regulator.