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Thermoil

Thermoil Desulfater Golf Cart RV Auto Marine Solar Battery Liquid Guaranteed to Restore Renew and Revive any Sulfated Lead Acid Battery Treats 2 Avg Batteries 6 8 12 Volt Treating Batteries Since 1992

    • Based on 696 reviews
Condition: New
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This item is eligible for return within 30 days of receipt

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 16
Order within 18 hours and 34 minutes
Available payment plans shown during checkout

Brand: Thermoil


Number Of Cells: 6


Terminal: Marine Terminal


Brand: ‎Thermoil


Number Of Cells: ‎6


Terminal: ‎Marine Terminal


Item Weight: ‎12 ounces


Product Dimensions: ‎8.5 x 2 x 0.12 inches


Manufacturer Part Number: ‎BA


Amperage: ‎12 Amps


Date First Available: June 3, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Brought back a 41 years old batteries
I recently found an old Hercules generator that was sitting in a barn since 1978 along with 12x very old batteries that weight 170lb each, batteries were 100% dry so I filled them with distilled water and placed them on charge for weeks, still they were not holding a charge so I sent 6 of them to recycle and kept the other 6 connected to my 24 volts solar charge controller, meanwhile I started doing research on something that could recondition them, after reading several good reviews on this product on Amazon I bought two bottles and added some to these large batteries, I still couldn't get them to work so I left them alone on the solar charger till I will find time to send them to recycle, probably about 3 months later I was working in my garage at night and just checked the charge controller which usually shows charge level as 12-20%, this time it was showing 70% so I went ahead and connected my 100W power inverter just to try to see if these batteries can run any tool, my angle grinder worked perfectly fine while the batteries maintained the 70% charge, the next day again I used my grinder, and chop saw on the inverter for about 30 minutes, this time the sun was out so the charge controller was working hard to charge the batteries while the inverter was drawing currents, the same evening when I checked the battery level it was sitting at 81%, that is too good for a battery that was sitting in a barn for 41 years. As of now my batteries are sitting at 94% but I did not use them since last time, it looks like the more they are used the better they get so I will try to hook the inverter to a high current tool and see what happens. I regret that I got rid of 6 of these batteries, they are 6 volts 400 Amp Hour batteries, this product seems has made a miracle, I just placed an order for 3 more to add them to my weak golf cart batteries. ... show more
Reviewed in the United States on May 14, 2022 by S-M-and-II
    • Thought it was working, but it didn't
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? ... show more
Reviewed in the United States on November 19, 2022 by L. Butcher
    • It actually worked
I was very skeptical at first. But after looking at the price of new batteries for my Rv, I thought what the heck, why not give it a try. The reviews seemed to be pretty good, so I purchased 2 bottles, enough to do 4- 6 volt Rv batteries. I followed the instructions exactly, especially since I was very skeptical, to make sure it actually worked. Well after about a week of charging and discharging, to my amazement, these batteries were rejuvenated. So take it from an old mechanic, this stuff does work !!! I can’t attest to how long this lasts, it’s only been a couple months so far. ... show more
Reviewed in the United States on August 28, 2022 by Master
    • Thermoil saved me the cost of buying new batteries
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. ... show more
Reviewed in the United States on September 8, 2023 by D. Stenberg
    • Will it work
So far it doesn't work
Reviewed in the United States on September 5, 2023 by Tom Olson
    • I cannot believe this worked!!
We had 10ish year old 8v golf cart batteries, 5 of the 6 were dead dead. Would not charge at all. I used about half a bottle in 6 8 volt batteries. Then set batteries on the ground, rocked back and forth, bumped them around carefully. Then took 12v car charger on start mode for about a minute or so, then put car charger on 6v for a couple of hours. Then used 8v 5 amp battery charger for about 10-12 hours each. Did this to all 6 batteries. All 6 batteries are working great now!! They are all back in the Club Car and the Club Car charger charges them all now. It’s able to run for quite a while between charges. Maybe not like new. But maybe like they were several years ago. I cannot believe this stuff worked!! ... show more
Reviewed in the United States on July 3, 2022 by Bartholomew
    • Didn't work for me.
I wanted to like it, but no improvement in my golf cart batteries.
Reviewed in the United States on February 16, 2023 by acbz
    • Wear eye protection and gloves.
Works as it should.
Reviewed in the United States on January 17, 2024 by Amazon Customer

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