Bernie Goldbach

The best wall charger I own

· Bernie Goldbach

Anker Smart Charger displaying 40 watts is connected to a power strip with labeled sockets.

The best wall charger that I own is Anker’s 100W GaN smart charger.

Until I bought it, I did not appreciate its Size-to-Power Density. Anker built this smart charger with Gallium Nitride (GaN) compoents that allow it to output 100W while remaining roughly 40% smaller than Apple’s standard 96W/140W single-port laptop bricks that litter our home. I’ve been able to fit it onto hotel power outlets without taking up adjacent outlets on power strips. As a bonus, the charger’s prongs fold back into its housing and that means it is easier to carry.

The thing delivers true Single-Port 100W output. I often need 80W to wake up my totally dead Microsoft Surface Book. It turns out that either of the two USB-C ports can deliver the full 100W when used alone. So it can serve both my 6yo Surface Book and my wife’s 2yo MacBook Pro.

The bottom of the unit has 2× USB-C and 1× USB-A slots. It splits power predictably. I can see it pushing out 65W + 30W across two USB-C ports, or 65W + dynamic split when all three are active. This allows I can fast-charge my Surface Book and a phone simultaneously from a single wall plug.

It does get warm. So it uses Anker’s ActiveShield 2.0 Temperature Safety features. According to the spec sheet, “Anker’s temperature monitoring checks thermals millions of times per day and regulates current dynamically so the charger never enters thermal runaway”. There’s a happy face on part of its UI to show all is well.

The unexpected facet of the charger happened when I started using it with my Samsung S25 Ultra. The charger supports USB Power Delivery 3.0, Quick Charge, and Programmable Power Supply (PPS). The charger’s on-board PPS support ensures it can trigger Samsung Super Fast Charging 2.0 (45W) on my phone while cleanly handling my son’s Bose earbuds and his Apple watch.

There may be one draw-back with the charger. On some of my Irish Rail journeys, something about the charger’s electronics stopped my train carriage from giving me power. When I used a smaller charger, one rated below 20W, I got a slow trickle of a charge.