jphughan
lvl.2
United States
Offline
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Quick add to the PD support discussion.
As noted, PD chargers are backward compatible with non-PD devices that only support 5V. And the fact that a device does not support using USB PD does not mean it can’t be charged from a charger that supports USB PD. The Avata 2, Goggles 3, and RC Motion 3 all charge just fine from PD chargers, though the Goggles and RC Motion 3 do not take advantage of PD capabilities. (EDIT: The Goggles 3 can charge at 9V according to my USB-C multimeter, although I never saw it draw more than 10-12W. The Goggles were already at 70%, so maybe it will draw more current when the battery is lower?)
HOWEVER, there are some devices out there that do not support USB PD and also will not charge from PD chargers. The reason is that devices that have USB-C ports but do not support PD are supposed to include a resistor across certain pins in the USB-C connector. This serves as a cue to the PD charger to fall back to legacy 5V, non-PD charging. But if the device manufacturer didn’t bother to add that resistor and the device itself doesn’t know how to perform a PD negotiation with the charger, then the device will not charge from a PD charger. You will instead need to use a USB-A charger (or some ugly hack involving a USB-C to USB-A cable plus a female A to male C connector to plug into the PD charger, which will prevent PD from being utilized.)
I have a ThruNite T2 flashlight that works as I just described. Definitely irritating, and I’d throw it away if it wasn’t otherwise so great as a flashlight. |
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