The next generation of GaN wall chargers is getting smaller and better

The tech world is probably sitting on the edge of a charger revolution, and most of us just haven’t realized it yet. No, I’m not talking about USB-C (sadly); I’m talking about GaN (gallium nitride) chargers, a material that’s started to replace silicon in chargers. I’ve had the chance to try out two of the first GaN chargers — RavPower’s 45W slimline design model and Anker’s PowerPort Atom PD 1 — and it’s not just marketing hype: the new chargers really do make a huge leap forward for shrinking down power bricks in a way that’s really exciting to see.

In both cases, simply holding the charger in your hand is enough to make you skeptical. The 30W Anker just flat out seems too small to drive anything bigger than a phone, and the 45W RavPower option, while a bit larger, also pales in comparison to a similarly specced silicon-based charger.

From left to right: Apple’s 5W iPhone charger (for scale), Anker’s 30W PowerPort Atom PD 1, and RavPower’s 45W GaN charger

But both work as promised, outputting the charge they say on their respective labels without getting unnecessarily hot or exploding, which is basically all you can really ask of a charger. It’s not magic: as my colleague Angela Chen explains, GaN is much more efficient, meaning that chargers that use it can be much smaller and waste less energy than ones based on silicon. The biggest obstacle is simply that companies are used to working with silicon, whereas GaN is relatively new; in an ideal world, we’ll probably start to see more products taking advantage of the tech in the near future.

It’s not perfect yet: Anker’s 30W Atom PD 1 struggles to power something as large as a 13-inch MacBook Pro — you can charge it while the computer is sleeping, but while actively running, it’ll still struggle to really keep pace with the power drain (although it’ll work in a pinch). And for anything smaller, like a phone, iPad, Nintendo Switch, headphones, or anything else with USB-C, it’s practically a no-brainer for the $29.99 price.

RavPower’s 45W plug is even more impressive — it can actually drive basically any USB-C device, barring the most power-hungry laptops (like Apple’s 15-inch MacBook Pro). And while I’d wish for that kind of wattage in something a little smaller, we’re still in the extremely early days for GaN chargers, and odds are that we’ll start to see more varied designs soon.

Source: The next generation of wall chargers is getting smaller and better – The Verge

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