[JB in VA]

I will check with the volt meter while running. Not sure if the batteries are hot, haven't touched them. All wires are brand new with good solid clean connections. The voltage meter on the car I believe is wired directly to the pack, not the controller. I believe it works just like if I was to hook the volt meter across the pack to get a total voltage. What are the chances that one of the brand new batteries is bad? Can a battery read at or higher than it's stated voltage when charged and still be bad? Maybe it would help to say that even though the batteries that were in the car before needed to be replaced they did function and I had the same issue with those. Ran normal speed on flat surface and then slowed up hill. Hoped that just changing out the batteries would help with this but clearly it seems to be something else.