Originally Posted by mpolli

I looked at that link. It looks interesting. I do not know how it compares to the one I have from VDC electronics (BatteryMinder). I am not sure I explained exactly how mine works, only what I observed on my DVM. I will put my scope on it and see if there is anything else going on. As far as voltage vs. current, to get a current pulse into a battery you will need voltage. Voltage is the pressure and current is the flow. So a voltage pulse will result in a current pulse. It is interesting that they do not sell this in the US apparently. Perhaps it is blocked by an existing patent? Anyway, on the one hand they state that prevention is best, but they also have a document purportedly from University of Vienna that says you can fix bad batteries to some extent. Still it is true that a good battery in normal car service will not need this. I personally would not waste time trying to rehab old batteries unless they were very valuable and only "slightly" bad.

Mike