I have a total of 22 a123 cells all of them check out fine, I also have 6 hyperion balance plugs for a 4s 1p config and a hypersonic charger.I bought them to use in my buggy. After two race weekends of 30-35 minute mains I am switching to lipo. I would let all of this go very resonable to help offset the cost of my lipo upgrade. Would part this out as well.