ProTek R/C LiFe 4PK/4PX Car Transmitter Battery Pack (6.6V/2100mAh)
[PTK-LF-CTXF2100-2S]

ProTek R/C LiFe 4PK/4PX Car Transmitter Battery Pack (6.6V/2100mAh)
donald rodriguez - Rating: 5 of 5 Stars! Verified Owner Monday, February 04, 2013
Perfect battery for your 4PKS much lighter then stock and last many hours between chargers.