I was curious about this. I read that you should generally avoid completely discharging and then full charging your Li-ion battery because this can strain the battery (though some suggested doing this every so often for calibration).
When your charging your phone via a PCs USB port it will take longer to charge because the USB port does not supply as much power as a wall charger.
Because of the fact that it will take your battery longer to charge, does it strain the battery more to charge when plugged into a PC?
Say for example my battery is almost completely discharged (like 10% life left) and I want to charge it to 100%. Plugging it into a wall charger vs a PC- what will be the impact on the health of the batter?