Nerd Ralph loves cheap and dirty hacks, and for that we applaud him. His latest endeavor is a LiFePO4 battery charger that he made out of parts he had on hand for under $0.50 US. (Although we ...

The circuit has internal under/over-voltage ... Based on SMIC 0.13µm 3.3v/1.2v Logic process, current design of the Battery Charger IP is a complete constant current/constant voltage linear charger ...