What is GaN charging?
GaN (gallium nitride) helps chargers be smaller and run cooler. It describes how a charger is built, not how fast it charges.
GaN stands for gallium nitride, a semiconductor material used in place of (or alongside) traditional silicon in a charger’s power components.
What it changes
GaN components can switch on and off faster and waste less energy as heat. Engineers use that to shrink the other parts of the charger, which is why many small 65W and 100W multi-port chargers are GaN designs.
What it doesn’t change
GaN isn’t a charging standard, and your device doesn’t “use” it. A 65W GaN charger and a 65W silicon charger deliver the same 65W, using the same USB PD levels. What matters for speed is still:
- the single-port output and the split when sharing,
- the supported standards (USB PD, PPS), and
- your cable.
Should you look for it?
If size and weight matter to you, GaN is a helpful sign, but compare the published dimensions and weight rather than the label. Two GaN chargers with the same wattage can differ a lot in size.