Thermoil® DeSulfater Golf Cart Solution Renews Restores & Revives Any Sulfated Lead Acid Battery Guaranteed! 64 Oz Treats Ten 6, 8 or 12 Volt Batteries. Made in USA

This product did not work in my battery but the company gave me a refund with no problem.

It was worth a try, but did not work. Wound up replacing the batteries. Lot of money.

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.

Easy to use however did not help battery

Hi. I am running two 48-volt and one 12-volt bank of Trojan L16E batteries on a fully solar house. The 12-volt group was going bad. That's two 6-volt batteries in series. One of the batteries n the 12-volt group was a consistent about 4-volts after discharge overnight and the other would drop to just under 6-volts. Both batteries showed low electrolyte quality on a hydrometer with the worst battery showing one bad cell.I picked up a bottle of this to try and got it all installed. Its best to do if the batteries are low. I had to remove the 2 ounces of electrolyte from each cell. no big deal. I replaced those 2 ounces with the battery additive as directed. After two days of normal use and recharging the lower battery dropped to 2-volts on discharge while the other battery lost about 1-volt under its last discharge rate. This was due to the other battery dragging it down I figured. I took one of the older batteries out of one of the 48-volt banks and replaced to bad battery in the 12-volt bank. The 12-volt bank began to work perfectly with only normal drop during discharge. I had to replace the bad battery with a new one.I don't know if the fluid helped the one good battery in the 12-volt bank but the electrolyte in the battery does show an improvement. This could be from it getting a better charge and discharging less at night.So moral of the story is, I don't know if it helped or not. I do know that the bad battery got worse after its use. I have other batteries that may benefit from the fluid that are showing that the electrolyte is getting weak. So, I might try again on those batteries. It's just something to consider.

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.

I've been screwing around with it for three or four days and haven't noticed any improvement.

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!!

As I saids above

A battery rated at 600 CCA, stopped workin and measured CCA showed only 100, after using this "rejuvenator", measured CCA went up to 300. Not back to normal, but not bad at all.

Did not fix my battery :/

I have a 4 battery house bank in the boat. One of the batteries was 0.09 volts lower than the rest. This was able to bring it to a 0.04 volt difference. Didn't bring it back fully, but it did bring it back enough to finish the season without too much worry.

I'M HAPPY WITH THE PRODUCT