I’m about to retire this DIY buck converter that has been used as a charge controller to backup or gone forever. It has served me well for five years. Being built in only a couple hours from free stuff found in the garage. Necessity is the mother of all inventions. It violates almost all the accepted conventions of design. Don’t listen to everything you hear. I’ll miss the sound of power line hum as it runs.
See my other videos on water heating and REAL DIY SOLAR.