Thermoil® DeSulfater Golf Cart Solution Renews Restores & Revives Any Sulfated Lead Acid Battery Guaranteed! Treats Two 6, 8 or 12 Volt Batteries. Made in USA

Great product used it on my fully discharged 8v golf cart batteries. The Batteries were completely discharged and did not have enough voltage to charge on the golf cart charger. I started by charging them with a commercial charger three 8volt batteries at a time as I had a 24 volt commercial charger. Once they reached a partial charge I let them rest and added desulfator. It goes in red and makes the battery acid opaque, then I put them back on charge. The charger quickly brought them to 80% then to the absorption phase of charging and finally recondition charging all of which was a very short duration for each step. Once charged the battery acid was clear again and I could again see the battery plates. Without adding this product I could not get the batteries to fully charge. I’m convinced this stuff made a real difference.

I bought this for some deep cycle solar batteries that I wanted to bring back to life, but found they were too old and gone before I tried it. The other day, my Chevy Silverado 3500 pick up suddenly was dragging and wouldn't start, so I decided this was the time to try out this product. I pulled both batteries (duramax diesel has two Interstate MT78's), put them on my charger and brought them back up to 14+ volts, then pulled an oz of acid out of each cell and added an ounce of this stuff, and charged them both again overnight. After that, I put them back in the truck, and not only did it fire up easily (to be expected after a full charge), but they maintained a high charge above 14v, per my dash gauge. I took it on a 30 minute drive on the highway to make sure they were getting a good charge. The truck started up each time I turned it off that day, and I was pretty happy to think I was going to avoid buying new batteries for awhile! But the next morning when I came out (25 degrees outside), the truck was back to dragging during ignition, and it would not start. I was really disappointed. Not only that it didn't work, but all the work that I did in pulling out the batteries, suctioning out the acid, putting them on the battery charger, putting them back in the truck, which is a pita. More that that, I was bothered that my $300+ Interstate batteries only made it 4 years, unlike all my previous ones which lasted between 6-8 years. Anyway, I ended up having to buy a new set of NAPA batteries for $340. I was really hopeful, but it just didn't work for me. How do I get a refund, now?

Saved 1000+ and didn’t have to buy new batteries.

I have a 2018 Jayco Seneca that I have had since. I admit that I did not maintenance my house batteries properly. I may have added distilled water to top them off a couple of times during the 5 years I’ve had them. I have 2 starter batteries that are sealed; and 4 of the pictures deep cycle batteries. Then for a couple months the battery was not holding a charge. Took it to Camping World and another RV place and they stated possible electrical issues.The point: I bought two bottles. I looked in my battery housing and it was almost bone dry for I don’t know how long. I added distilled water till the line and added 2 ounces per cell (3) per battery. Whatever was left to reach the fill point after the 2 ounces I added more distilled water.Day 1 battery started to hold charge; 3 weeks later and a couple trips it’s holding a charge all day and night with days in between starting the RV. Hope this helps someone. This product helped me save $800 bucks.

Used it but I guess the battery was too far gone to recondition .

I recently had the opportunity to use Thermoil Golf Cart, RV, Boat Battery Restore Renew Liquid, and I must say, it exceeded my expectations. I've owned a used battery-powered golf cart for three years, and due to my neglect, the batteries had deteriorated to the point where the cart could barely make it around the block on a full charge.When I discovered Thermoil, I was initially skeptical, but the positive reviews and testimonials convinced me to give it a try. Spending around $80 to potentially restore my batteries was a much more appealing option than shelling out for a new set.Following the simple instructions on the bottle, I added Thermoil to the cells of my golf cart batteries. To my amazement, it worked exactly as promised. My batteries were rejuvenated to a like-new condition, and my golf cart now performs excellently.Thermoil not only saved me the cost of buying new batteries but also saved me the hassle of disposing of old ones. It's a cost-effective solution for reviving neglected batteries, and I highly recommend it to anyone facing a similar situation. It's a small investment that provides a significant return in terms of battery life and performance. Thermoil has earned my trust, and I'm glad I gave it a chance.

Doesn’t work

This product is probably designed to add BEFORE your battery starts to die, I’ve heard through YouTube that battery manufacturers aren’t putting a good concentration of electrolyte in the battery cases anymore. It’s true, all six cells measured very low density, and the car actually had an electrical glitch from being discharged so low, that the ECU reset itself.Silly me didn’t read the directions, and I added 2 ounces of this product to each battery cell. My original battery is rated at 500 CCA, It was reading 315 CCA before adding the desulfator. I then put it on a standard charge for three or four hours at near 20A with a gradual drop to about an amp and a half. I load tested the battery, and measured 584 CCA. Went back out in the morning to check it again, and 562 CCA was the result after sitting for 8-10 hours. Cranked faster than ever before, and it seems to have worked out well for me so far. Reminds us that we take our batteries for granted, and when we neglect them, there’s nothing that can cure a lack of maintenance. I’ll update the post if I find anything problematic as time goes on.