I understand this only works where capacity is reduced due to sulphurization . Two security system batteries have failed to improve. A week into Woking on a car battery shows some improvement.
Verified purchase: Yes | Condition: New
It's a bit fiddly to use without putting crocodile clips on or soldering to the charger leads. For the price itt should be in a case, I think. I used it on 3 car batteries that I had in the shed. The first one I thought was dead. Correct! It didn't charge after 3 weeks of on and off charging. It did spill acid on my worktop (not the devices fault I think). The second one which I thought would charge, did charge. It was almost back to 100% after 12 hours charging and is holding a charge fairly well after a couple of weeks. The third one was over 10 years old and though it had been working before, I doubted that it would be any good. However it charged up fine and has held a charge for several weeks now. So was it magic or was it snake oil? I'm undecided. Considering this item is about 30% of the cost of a new battery, I'm pretty sure it won't be cost effective for most people.Read full review
Verified purchase: Yes | Condition: New
I have used this on two batteries and has given them a new lease of life. So far so good.
Verified purchase: Yes | Condition: New
The product has helped recover a 12 volt car battery from 5.4 volts. In less than 4 weeks. The product is designed to work slowly and carefully to restore your 12 volt car battery. Please read all that you can from google about desulfators before you say it doesn't work.
Verified purchase: Yes | Condition: New
Connected this device to my 22ah golf battery that was failing after 15 holes. It's been connected for 3 weeks and battery is now restored to normal operation. Highly recommend for good batteries that fail prematurely, mine was 18 months old. Let's hope it lasts!
Verified purchase: Yes | Condition: New