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Testing Faster Wireless Charging on iOS 11.2 Beta

Matt Birchler ran some tests with faster wireless charging on iOS 11.2 (currently in beta) and, unfortunately, the results aren’t impressive:

Over the 2 hour test, the iPhone 8 Plus went from zero to 47%. It charged at an incredibly consistent 4% per 10 minutes. Previously I got up to 40% with this same charger after 2 hours, which is a 17% improvement in wireless charging speed. While this is indeed an increase, it’s not the sort of increase that’s going to get you from “wireless charging is too slow” to “I love wireless charging!”. If you have 2 hours to change your phone and there is a 7% difference in the change level, I don’t think that’s a huge deal. Especially when you compare 30 minutes on the charger, I saw literally no change in performance, as it took 30 minutes for the phone to reach 11% charge.

As I noted yesterday, the Qi spec supports up to 15W, but it’s unclear if Apple will go beyond 7.5W for wireless charging on the iPhone 8 and X lines. “Faster” wireless charging doesn’t compare to actual USB-C fast charging at all – earlier today, I tested a 30W USB-C battery pack for an iPhone X story I’m working on, and the device charged by 83% in just 60 minutes. Now that is remarkable.