I stopped using the gens ace along time ago. With their balance wires they use such a thin gauge wire that you can actually pull/break the wire with your bare hands. To me that is too fragile for off road. All of my 4s packs (4 total) had the balance wires break within the pack. Either broke away at the solder joint or the wire just broke. Go with SMC packs. Danny has great service and includes a warranty. And the packs are built much better.

http://www.smc-racing.net/index.php?...product_id=141