Tests suggest that using Apple’s new MagSafe charger with previous-generation iPhones could result in super-slow charging compared to normal Qi wireless chargers. Testing on the iPhone 11 Pro, for example, showed a charging rate as low as 0.96W against the 7.5W it should have drawn.
Apple says that the MagSafe charger launched last week is Qi-compatible, and thus suitable for older iPhones …
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