Ahoy, I used to sell the Flow Rite system (as well as another brand) when I worked for Crown Lift Trucks.  It was ideal for battery watering and greatly simplified the process.  I plan for it after I get a Simrad tiller pilot.  It won't eliminate the need to open the battery boxes, but topping off is a piece of cake.

How many batteries can I hook to one pump system?

Thanks Tate

Frank Scalfano wrote:

I bought one of these systems, I don't remember which now, and after using it once my batteries failed and had to be replaced. I'm now thinking that I will eventually move the batteries under the starboard settee where I can get to them easily, and where they will be closer to the center of the boat and lower.

Frank,

Are you saying that the system was responsible for the battery's deaths?  Or that they just happened to die afterwards and you're now looking for a better solution.  If you do blame them for the death of the batteries, how did it kill them?

I use  Qwik-Fill and so far has worked good for me - I have 3 12V type 27 batteries. 

The yellow part replaces the battery caps - and the black fillers are floats - so when the battery is full the floats shut off.  The air in the line is pumped out and vents at the battery.  The pump has a quick connect for the supply line which traps the water in the system. 

I like being able to top off the batteries in a few minutes. 

more images here link