I am always concerned with the water in the batteries. It is so hard to get to the back cells in the batteries to check the water. You have to disconnect the cables to get the caps off. I was checking into Flow Rite MP2000 Quik Fill 12V double RV battery watering system. RVUpgrades.com has the system for $49.19 and the pump for the system at $18.03. This would make it so much easier to keep in check. So does any one use this system. I have 2-12v battery system and looking to make is easier for me.I have a 2010, 2551 and looking forward to the next camping season. Motorhome is kept in a garage and out of the elements.So any suggestions?
I have no idea whether this would work in your situation, but a lighted dental mirror for checking the water level one-handed is sometimes easier than a small mirror in one hand and a small flashlight in the other, though either can work. Nighttime if outside, or in garage, can make it easier to see water levels with mirrors and small lights when batteries are in recessed compartments as it avoids the glare of sunlight. For adding water, an eyedropper and a coffee mug with distilled or deionized water works to fill cells to correct level. This was learned on Dad's '97 Roadtrek 170, with a battery in a box recessed into a corner in the rear storage compartment.Never overfill cells; remember they'll overflow if you add too much water when the battery is discharged as it expands when charged. In many batteries, the correct level is just below to just touching the bottom of a recessed ring below the neck of the cell when the battery is charged. And if you have a battery that takes water and it needs it often, there may be an overcharge problem with some part of the system.
I have found that a simple $2 kitchen baster works as a giant eyedropper to fill the batteries. I simply use a good LED flashlight to inspect them. Also, I keep a gallon of distilled water in the garage. I have strips of colored paper cut to about 1/2 inch wide by a few inches long that I dip into each hole until my thumb stops them. Then, I observe the distance from the top of the water mark on the paper to my thumb to determine if I am up to the magic ring in each hole. That is easier sometimes than trying to use the flashlight. Probably more accurate as well. Paul