A battery watering system for a motorhome or RV with a large battery bank can be very useful tool!
I have four 6 volt house batteries in my motorhome, JBAM. These batteries provide something around 400 amp-hours of capacity and I put this to good use! I’ve settled on a once per month schedule for checking the electrolyte level in these batteries. This is a bit of a nuisance. The batteries are on a sliding tray which is really great. However; this tray is under one of the bedroom slide-outs. So, the slideout must be in to get adequate access to the batteries to see into each cell to determine the water level. My batteries always seem to need a bit of distilled water added, I decided to install one of the “filling systems” – I call it a watering system.
I elected to purchase the Flow-Rite product.
The main item is the RV2000 Pro-Fill product. This includes two manifolds that fit on top of your battery and replace the existing caps. Each manifold includes a valve in the “cap” for each cell which automatically closes when the cell is full of electrolyte. The two manifolds are connected together via a hose. An adapter is fitted to the hose to allow you to connect the RV2020 Qwik Fill Hand Pump.
To fill, you simply connect the hand pump, drop one end in the jug of distilled water, and start pumping. When all cells are filled, you are no longer able to pump water with the hand pump and are done. This makes the job VERY quick, easy, and mess-free!
Of course, with four 6 volt batteries, a second RV2000 is needed.
Now, my process is crazy simple – even with the bedroom slide-out extended. I simply open the basement door, connect the hand pump to one quick connect fitting on one manifold, pump til it stops, switch to the other manifold, pump til it stops, close the basement door, and I’m done! VERY, VERY EASY!