Yes you can. High voltage chargers are made to be used for a limited time.Originally Posted by cproaudio
Run them too long, and your battery will fry.
This is true, and I did not dispute it.If the battery voltage is below 13 volts, it means that the alternator is not producing any power and is defective.
As far as those articles are concerned, that is interesting reading. And thank you
for that. But any car which runs that way has a poorly designed electrical system and voltage regulator. But that is a very good thing to
know for those that are unlucky enough for that to happen.
Unhooking the battery from any of my vehicles the voltage reads in the range
of 13.8 - 14.6 volts with occasional small spikes above that, but nothing near 20+ volts.