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Apple Watch Ultra - Fast Charge not Happening

Hi there, I became suspicious that my Apple Watch Ultra was charging slowly so I have measured it over the last charges and it falls well short of fast charging speed.


Using the fast charging puck and a 20W (A2344) charger it took 1h 11m to charge from 18% to 56% and 2.25 hours to charge from 18% to 94%. This is similar when using other charger bricks of 20W+.


I've seen other's having this problem on other forums - anyone here having similar issues? Is this likely to be a software issue fixed in future WatchOS releases?

Apple Watch Ultra

Posted on Oct 14, 2022 7:15 AM

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Posted on Oct 30, 2022 1:00 PM

So it appears that there is an issue with fast charging - it will only work when the watch is connected to an iPhone. Hence why when I was wearing another apple watch during charging there was no fast charging. I have tested this and get pretty consistent results. It wasn't sorted in 9.1 but looks like it may be in 9.2

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Question marked as Top-ranking reply

Oct 30, 2022 1:00 PM in response to a1000

So it appears that there is an issue with fast charging - it will only work when the watch is connected to an iPhone. Hence why when I was wearing another apple watch during charging there was no fast charging. I have tested this and get pretty consistent results. It wasn't sorted in 9.1 but looks like it may be in 9.2

Oct 14, 2022 9:55 AM in response to a1000

Hope you get it sorted. For me, I don't sleep with my watch on my wrist, so my watch is on its charger from the time I go to bed till I get up in the morning. i.e., Fast Charge isn't an important feature in the way I use my watch.


Must say that the battery life in the Ultra is, to me, is one of its best features. I can truly a full days use and then some from the battery. For example, strapped my ultra to my wrist at 7:30 AM this morning and have streamed music, read a few emails, text messages, etc., and my remaining charge at almost 1:00 PM is 96%. Simply, awesomely flat out amazing!

Apple Watch Ultra - Fast Charge not Happening

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