Silicon’s so old school. The latest generation of power chargers are based on Gallium Nitride (GaN) and they’re smaller, more powerful and much more flexible. Tech expert Dave Taylor explains what’s new and takes a close look at both the Spigen PowerArc 20W USB-C charger (perfect for smartphones and tablets) and the AUKEY Omnia USB-C 100W PD Charger (great for laptops).
