I got three old chargers from flea markets. One is very old (probably 1930's), one is from the 70's and there is one relatively new, probably late 80's.

All of them needed repairs, but the prices were $5, $5, and $1....

In this video I replace selenium rectifiers with diode bridge; cut apart transformer core and reweld, and clean up a filthy charger that had corrosion problems.

FOLLOWUP: New meter covers installed!
   • Battery Charger Followup! New ammete...