Need quick battery help
I have a set of 7 cell NiMh batteries that I'm hoping to run tomorrow in the woods. I tested the truck today to make sure everything was ok and it was for quite some time. Then the truck had VERY VERY little acceleration. I took out the batteries and checked the voltage and they were sitting near 9 volts still. They were a little warm but not to hot to hold indefinitely. Please help diag this before I leave tomorrow.
Thanks!