USB li-ion charger revision
An year ago, I've shared a circuit of USB li-ion charger based on LM358opamp. The circuit had some problems as reported by commentators that inclide wrong direction of LEDs. Features:…
Simple LM358 OP-AMP based USB Li-ion charger
UPDATE: https://www.circuitsdiy.com/usb-li-ion-charger-revision This is a simple li-ion charger without a dedicated li-ion charger IC. This circuit can be used to efficiently and intelligently charge any single cell Li-ion battery pack…