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agesilaus's avatar
agesilaus
Explorer III
Mar 06, 2020

Quick review on: Flow-Rite RV2000 Pro-Fill RV Edition

Quick disclaimer: I have no association with this company. Anyway I finally got my second set of 2X6V golf cart batteries installed in the basement of the camper. I have another set on the trailer tongue behind the propane tanks. This second set was going to be a problem watering since space was too tight to allow the usual black battery waterer doohickey room to operate. I've been looking at the watering systems available for batteries but until now didn't see a real justification for spending the money. Now I did.

Bought the Flow-Rite RV2000 Pro-Fill RV Edition Amazon and installed. The installation was a bit harder that the instructions make out. The manifold that inserts into the three fill ports has to be pushed down hard until you head a positive 'click'. Otherwise they will pop right out. I suggest starting with the center fill port and then doing the two outside ones.

You also have to buy their squeeze bulb water pump, tho I suppose you could rig up something. The combined price is about $80. Using that pump it makes watering the batteries quite quick and easy with no spillage. It worked so well that I ordered a second set of the other set of batteries. The ones on the trailer tongue were a PITA to get to and water but this made it painless. You only need one pump for multiple sets since you do not leave the pump connected after you are done. If your batteries are close enough you can daisy chain sets of batteries. But I would have had to drill a hole in the front of the RV and I didn't like that idea.

The only drawback is that you cannot visually check the water level in the batteries. You just pump, right out of a gallon bottle of distilled water, until the rubber bulb gets hard. Pulling these manifolds out would be a big hassle.

Trojan salso sells one of these systems but at much higher price.
  • It meant the difference between filling them monthly vs never.
    My criticism is that bulb cracks and fails too often and I haven’t found a cheap one. I’m on my third or fourth one.
  • Big Katuna wrote:
    It meant the difference between filling them monthly vs never.
    My criticism is that bulb cracks and fails too often and I haven’t found a cheap one. I’m on my third or fourth one.


    Heck I didn't see that, it looks like a standard rubber bulb tho I'll check tomorrow, I think I may have one.
  • The squeeze bulbs do have a short life span. I replaced mine with this (or similar).

    Squeeze Bulb

    The hose (tygon tubing) can be found in any hardware store, just use the original fittings.
  • I can see getting something like the above for batts in tight quarters.
    I manually check/water on a monthly basis. Pros to that is your doing a visual every month. Its not just the electrolyte levels you should be looking at. Crusty interconnects and such can be a real problem if not spotted.
  • Corkey05 wrote:
    The squeeze bulbs do have a short life span. I replaced mine with this (or similar).

    Squeeze Bulb

    The hose (tygon tubing) can be found in any hardware store, just use the original fittings.


    I saved that to my wish list for when I need one, but I'm going to purloin the bulb off my unused boat gas tank too.
  • Thanks for the link. I hadn’t looked in a while.

    Not only were mine hard to inspect/fill due to space limitations, a few required taking cables off to get to. I took cables off, installed the Pro Fill then re installed over it.
  • Also note that electrolyte vapor can get thru the caps and lightly coat the topside of the battery. If its coat across the posts it can slowly discharge you battery(s) in not under a trickle or float charge.
    Take a sensitive volt ohm meter, set it on dc. One lead on a post and touch the other lead around the top of the battery where you see the coating.
    Wet cells are a tremendous value IF properly fed and watered. I had 4 Sam's Club 6 volt batteries last 12 years!
  • I'm using Deoxit paste on all the terminals. That's supposed to add some protection.