That looks like a nice tool; I managed to get the caps off using a flat fender washer. I checked one of the cells with a battery tester, the fluid came to the very top of the green "good" just before the white "not so good" part of the battery tester. The battery is not holding a charge; I bought it at O'Reilly's about four years ago, the car is garaged so I don't understand the battery going bad this fast. Battery prices have almost doubled in the past six years or so.......YIKES!!!