Now I have spent three weeks on these battery desulfators, without really being able to see any positive effect.. After putting an oscilloscope on, I can now better see why. On the desulfator where I have shortened cables, we see a voltage pulses on only 1 volt peak,, on the one with long cables it was as low as 0.6 volt. I am afraid that these cheap Chinese desulfators is not delivering anything near the 60-100 volts peak, they promise. It seems that I have been cheated :-/ ________________________________________________________________ My PlayHouse is a channel where i will show, what i am working on. I have this house, it is 168 Square Meters / 1808.3ft² and it is full, of half-finished projects. I love working with heating, insulation, Servers, computers, Data center, green power, alternative energy, solar, wind and more. It all costs, but I'm trying to get the most out of my money, and my time.