Originally Posted by
Ridefreemc
I had an odd experience charging (trying to) my phone with a 5 watt solar panel. It was overcast and the phone actually discharged. I heard that could happen overnight, but not on a fairly bright, but cloudy day.
I have on rare occasion plugged an Android tablet into a charger and later found it discharged instead of charged. I suspect that one of the pins in the connection was not connected right which caused that. Since then I started using an amperage meter on my USB charging so I could see if current was actually flowing in at a rate that I wanted it to.