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Alright with my trusty kill-a-watt (yes I know it's not as accurate as USB amp meter), I did some experimentation with my Mini 5. With the stock 12 watt with USB A-Lightning it draws 15 watt max which I assume is due to power loss between 15-12 watt. Using my iPP 12.9 18 watt charger with Apple USB C-Lightning cable draws 20 watts - same as my iPP 12.9. So yes, CONFIRMED the Mini 5 does fast charge at 18 watts (at least faster than 12 watt max with USB A-Lightning can muster). I then tried it with my rMB 29 watt adapter and it's drawing about 23 watts so about 21 watts max. I haven't done time testing to see how much it's shaving off vs the standard adapter.
 
I’ve charged my Air 3 overnight with the 30W charger and it took 2 hours from 24% to 100. Is that fast too?
 
Still wish it was usb C. But since I’m stuck with lightning on my 8+ anyway it’s not much of an inconvenience when traveling
I don’t have hard numbers but it definitely charges much faster than Air 2 and mini 2!
 
Thanks for all the reports! Very nice. All my USB-C PD chargers I have invested in the past 2 years can fast charge my mini 5 now. Cool. I wouldn't even buy one without USB-PD anymore now. Including power banks.
 
I’ve never experienced fast charging, don’t own one. Am I missing out? How fast from 10 to 80% does the mini 5 charge with it? Good for say an emergency charge at the airport where you might have just 5 min at an outlet?
 
I’ve never experienced fast charging, don’t own one. Am I missing out? How fast from 10 to 80% does the mini 5 charge with it? Good for say an emergency charge at the airport where you might have just 5 min at an outlet?
The fast charge depends on your battery level. The lower your battery level, the faster the charging.

https://www.macrumors.com/guide/iphone-x-fast-charging-speeds-compared/
Here is a quick comparison. It's faster but not that faster than the 12W iPad charger. Not sure about those with even higher wattage, but I doubt if the iPad mini would accept anything higher than 30W?
 
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