Yes I would be quite confident that any USBC wall charger which is powerful enough will provide fast charging when combined with Apple’s new charging puck.I think you need the new USB-C cable/magnet and (I'm hoping any) >=20W USB-C charging brick. I have a 27W USB-C wall-plug that I'm going to try with it. Pre-ordering the series 7 tomorrow and will follow up here if 3rd party chargers will fast-charge something like 0-80% in 45 minutes. I've got an 18W car charger that I intend to test as well. If they don't work as well as I need to then I suppose I'll have to go the store and pick up an OEM 20W as well as check out a few new watch bands.
I have a 27W USB-C charger with USB Power Delivery that appears to fast charge my Watch Series 7. It seems that USB Power Delivery is required for fast charging. Haven't had the need or opportunity to try it on my 18W car charger but I assume it will work just fine as it also has that feature. Battery life is pretty nice, but of course it is brand new; and it does charge pretty quickly, though I haven't used any other smart watch before.Any speculation or even actual knowledge on how fast existing 3rd party chargers like the Belkin Boost or their 3-in-1 will perform with the Series 7?
Fast charging requires an Apple USB-C Magnetic Fast Charging Cable. This cable has aluminum around the magnetic charger and a USB-C connector.
You also need one of these power adapters:
- Apple 18W, 20W, 29W, 30W, 61W, 87W, or 96W USB-C Power Adapter
- A comparable third-party USB-C power adapter that supports USB Power Delivery (USB-PD) of 5W or greater