Originally Posted by Freedom65
I looked at the site. There seems to be two different systems. Is it the pro-fill rv system you have? Also, the description says it fills two batteries, do I need two systems for my four house batteries?
We also have 4 coach batteries and use the Pro-Fill type. You'll need two sets and connect them together. One bulb type inline pump is all you need as it fills all 4 at the same time.
When batteries are full the filler cap valves close and the bulb pump can't be compressed.
It's important when ordering to let them know the battery brand you have as the filler hole center spacing in batteries may vary depending on the brand.
Good luck and safe travels