Review on Enhanced BatteryMINDer 1510: Efficient 12V-1.5A Charger, Maintainer, Desulfator for Cars, Trucks, Motorcycles, ATV, Boats, and RVs by Eric Temple

Okay, now I can believe it. I've played around with charger desulfurizers and even built my own to see if they actually work. Mine had variable frequency and amplitude. After playing around with my desulfator for a while I bought this out of curiosity, hooked it up to the battery and looked at the o-scope display and it was interesting enough. The frequency and waveform were the same as I understand it. With my homemade only this one had a little more amplitude. So I tried using the battery from my tractor battery which seemed to be dying. This is a 12v 420 amp AGM cold start box. Before plugging in the device it was tested at 145 cca and 12.95 volts, 40% lifespan. I let it charge for 8 hours and checked again for 145 cca, 13.2 volts and the tractor start was weak. desulfator idea. then I left it plugged in for 3 days, unplugged it and checked 3 times because I had a hard time believing the results. 13.29 volts and 540 CCA 100% lifespan. it was like a new battery. It sat in the barn all winter without a charger. my conclusion. These things really seem to work, but you have to give them time to do their job and to me this is an exceptional device because when it's done charging it will automatically slow down so it doesn't drain the battery. I recommend everyone for charging and storing batteries.