As the MacBook Pro 2016 series supports various USB PD profiles, I'm wondering whether they will also charge using other USB standards, for example:
- USB Type-C, 1.5A or 3.0A at 5V using the passive marking resistor (not PD)
- USB Type-A using an A to C cable, connected to a USB BC DCP at up to 1.5 A (for example newer iPhone or most Android compatible chargers)
- USB Type-A, connected to an iPad charger at 2.1 A or 2.4 A (using Apple's proprietary D+/D- voltage handshake)
I'm aware that most of these will not be able to supply enough power for normal operation of the computer, but being able to charge slowly while in standby would still be useful.