Good move Mike ...
This is a good setup, I use it all the time.
If you can get a sealed lead acid battery or even better a Lead acid Gel Cell.
the gel cell eliminates the risk of acid spillage
Takes about a minute of drying for a 8" SCT corrector lens for EG.
PS: enjoying some time in Brisbane at the moment & Looking forward to catching up with some of the Brisbane Iceinspacer's.