Title says it all. These are brand new. Opened them up last night to check the charge and all cells were 3.85. I've never had a problem with traxxas lipos at all. I'm running these in my monster slash. Also bought 2 new 4s lipos for my xmaxx and both packs are flat on the top and bottom.

I had a guy tell me that was a "newer style" battery with insulation around the top and bottom. I've never heard that until now. Any help would be greatly appreciated.
New battery on the right 6 month old battery on the left.