Checking electrolyte levels and adding water to golf cart batteries often involves bending, squatting and reaching due to where they’re situated. But with a Pro-Fill™ Onboard Battery Watering System from Flow-Rite, this routine maintenance is fast and easy. This manifold and battery fill port valve assembly allows all cells to be filled to the ideal level simultaneously without any acrobatics by the user.

The Pro-Fill single-point solution overcomes two important safety issues. First, its unique design has a built-in water barrier and flame arrestor to prevent sparks from igniting adjacent battery cell gases. Second, because it’s a sealed system, there’s no chance of acid splashing. It’s the safest method of watering batteries on the market today.

Installing the Pro-Fill Onboard Battery Watering System is a simple DIY project that doesn’t require modifying the 6-, 8- or 12-volt battery case. Each vent cap is replaced with a patented Flow-Rite shut-off valve and interconnected via the manifold assembly; multiple batteries can be linked with included acid-resistant tubing. The array attaches to a water supply with a quick coupler. A flow indicator signals when filling has been completed. A video is at

Flow-Rite’s Pro-Fill Onboard Battery Watering System comes with a five-year warranty. Prices start at $64.99.

Contact Flow-Rite, 960 74th St SW, Byron Center, MI 49315. 616-583-1700. [email protected];; Instagram: FlowRiteControls

Originally seen on Golf Car Advisor