You may have seen the videos on YouTube showing how to remove rust with an old analog battery charger and some laundry or washing soda. Well old battery chargers are hard to come by and when you do find one, it may not even work. I burnt up one plugging it into a regular 110 socket that someone rewired to 220v for some unknown reason. The only other one I managed to find didn’t power on. There are two solutions to this that I have...