I replaced my MacBook charger with this compact wall unit - and wish I'd done it sooner

I can't believe how small wall chargers are getting thanks to gallium nitride (GaN) technology. I remember when a 30W charger would be a big, brick-sized lump. Now you can get chargers that are several times more powerful for a fraction of the size.

Take the Cuktech 15 for example. This is a beast of a charger in a petite package.

At the core it's a 140W unit measuring 3.11 x 2.56 x 1.26 inches and weighing 11.8 oz, similar to the charger that Apple ships with its MacBook Pro laptops but 20% smaller. This charger is far more flexible thanks to being kitted out with not one port -- but four.

There are three UBS-C ports, two capable of 140W max when powering one device, and the other that's good up to 33W max when used on its own. There ...