Yes, that's exactly what happens. Plus, I charge each battery individually - its not a good idea to charge them in parallel. I used 12AWG - 13AWG silicone wire, extra flexible. Using that silicone coated extra-flexible heavy guage wire is very important.

The Y-joint was made with crimp terminals (crimped with a proper crimp tool, not mashed with pliers) then soldered for extra insurance.

I hope that answers all the questions... if not, what other info can you use?

Bob