EcoPower "Electron" 4S Li-Poly 35C Hard Case Battery Pack (14.8V/4100mAh) (ROAR Approved)
[ECP-LPH-4100-4S35]

EcoPower "Electron" 4S Li-Poly 35C Hard Case Battery Pack (14.8V/4100mAh) (ROAR Approved)
Kelly - Rating: 5 of 5 Stars! Verified Owner Thursday, July 18, 2013
I have two of these for rc8.2e, they perform perfect, surprisingly long run times, I won't buy anything else..... I used high-end brand 2s lipos for indoor 1/10 scale racing, after 8 months or so with light use, two batteries discharged very uneven and didn't balance well either, so after that I'm not sold on "you get what you pay for"