Nano Power Bank (5K, MagGo, Slim)

It's so slim I forget it's in my front pocket until I need it, and the magnetic snap-on feel is satisfyingly secure. That 5K charge got my phone from 15% to full with a little left over for the next day.

The 5K capacity is exactly what I expected for the size, and it does charge my phone once, but the slim profile makes it slide around in my pocket more than I’d like. It works fine for a quick top-up, though I wish the cable were longer for convenience.