Over the last 5 years, wireless charging speeds have leaped from around 5 watts to 10 or 15 watts in a handful of phones. That ain’t too shabby, but with new flagships like the Galaxy S20 and the Huawei Mate X sporting 45- and 55-watt wired charging speeds, wireless charging still feels slow.
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Source : Why Are Wireless Chargers So Slow?
