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 ...
If a charger came with only a USB cable, we plugged it into a 20 W USB-C wall adapter. We measured the phone’s battery level after 30 minutes and then again after an hour. Any reputable Qi ...