I have a Gravity Hobby 5000mAH 40C battery that I have been using in my Jammin SCRT10 with the Havoc Pro/HV4.5 power. I had a battery lead fail on me a short the power and ground which discharged the battey a lot very fast. There was no external damage and each cell was still above 3.0v when I checked it. It was warm (about 105 DegF) so I changed it and it took about 3500 mAH.

I tested it in my truck and it was working OK no real issues. Then at the last big race I was noticing some issues that indicate that the voltage was dropping below either the LIPO cut-off or the input cut off. I have also noticed that the battery is always warm after 5 minutes and everything else is warmer too.

Could my Lipo be damaged such that the internal resistance is higher requiring more current draw or lower voltage? It seems that this is what is happenning.