Review on Golf Cart & Deep Cycle Battery Hydrometer Tester by Matthew Rodenbaugh

Came adequately packaged with no instructions. The glass "areometer" was protected by styrofoam in a plastic cylinder. I removed the lightbulb, removed the glass hydrometer, and placed it inside while I looked at Revain's picture. Attach a piece of rubber tubing to the end. Really easy to assemble and easy to make. The piece of glass that goes in has green, white, and red markings to indicate if the liquid is good, borderline, or bad. I'm assuming this was correct as my golf cart works fine and the batteries hold a charge. Used it, ran it under clean water to flush out battery acid and kept it in my tool shed. Good value for money.