Battery Filler Jug
Periodic checking & filling your batteries with water, preferably distilled, is an unpleasant task, however, we can make it a little easier. Watering should be done at regular intervals, at least once a month, for optimal battery life.
This 2 quart plastic jug will make the job much easier. It fills each cell of the battery with water and shuts off automatically when the proper water level is reached. The special cap allows only the necessary amount of water to enter the cell.