Input voltage for battery
Does anyone know the input voltage/amps for the new MacBook Pro (2016 w/function keys) battery? I bought a portable external charger with outputs of 5V/3A, 9V/2A, 15V/2A, 20V/1.5A. I want to make sure using it regularly won't damage the battery long term. I ask because the Apple charger output is rated at 20.3V/3A, 9V/3A, 5.2V/2.4A. I checked System Information while I'm charging via portable external charger and it reads as 31W coming in while Apple charger is moving 60W. The portable external charger does charge the battery but at a much slower rate than the Apple charger, obviously.