Charging tech has advanced more in the last few years than the decade before it. GaN chargers are smaller, cooler, and more efficient — but the reason behind that leap is something most people have never heard of. In this video, we take a look at how chargers used to work, how they work now, and the engineering shift that made modern charging possible. It’s a simple story of smart materials, better design, and a surprising amount of hidden innovation. Chargers in this video. 500W: Mini Charger: 65W: