Despite advancements in smartphone hardware and software, the batteries that power our mobile devices have remained practically unchanged for years, even decades. All manufacturers are able to do is cram more of the same volatile chemicals inside the same size of packages, increase battery efficiency, or reduce the downtime imposed by charging. The latter has been the focus of fast, or rather extremely fast, charging technologies of late and Xiaomi is claiming the crown for what it proudly proclaims is the fastest wireless charging technology that could be available to the consumer market soon.
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https://www.slashgear.com/xiaomi-80w-mi-wireless-charging-tech-boasts-19-minute-downtime-18643182/