This Is How Google Got Wireless Charging To Work On The Pixel 5

Pixel 5
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Wireless charging on the Pixel 5 is a confirmed feature of the phone. But, how does Google get it to work? The answer is a seemingly elegant one. Considering the phone uses an aluminum back.

Because of the way wireless charging works, it was suspected that the Pixel 5 may not have it. Wireless charging doesn't transmit through metal. Which is a reason why the Pixel 4 came with a glass back.

It can transmit through plastic, but many manufacturers won't use polycarbonate or other types of plastic materials if they plan to incorporate wireless charging. Due to heat issues.

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That doesn't mean there aren't plastic phones that offer it. Samsung's Galaxy S20 FE is made from a plastic/glass hybrid. It also offers wireless charging. Google wanted the more premium feel and durability of metal though. So it came up with a solution to make wireless charging work.

The Pixel 5 supports wireless charging through a Bio-resin cutout

Android Authority's David Imel (spotted by 9To5Google) explains how Google got wireless charging to work.

Instead of using glass, plastic, or a hybrid of the two, it made a physical cutout of the metal where the wireless charging coil sits. It then layered a Bio-resin material on top that matches the look and color of the metal. So it all appears like one cohesive piece of hardware.

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The wireless charging coil can conduct the energy through the Bio-resin. And what's more is that this also allowed Google to implement reverse wireless charging for other devices. Like the new Pixel Buds it released earlier this year.

The Bio-resin helped Google keep the device thin

Whether Google knew it or not when it came up with this solution to the wireless charging problem, the Bio-resin does more for the Pixel 5 than you might think.

It also apparently helped Google keep the device thin. It measures at just 8mm. So it'll have no problem feeling less weighty than other devices.

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For comparison, the Pixel 4 is 8.2mm thin. So the Pixel 5 is just barely thinner. But still thinner. Overall this speaks to the creativity of Google's engineers and design team. As it's a solution that many were seemingly unaware of.