321 MagGo Battery (PowerCore Magnetic 5K)

The magnetic snap is so satisfying, and the 5K capacity got me through a full day of heavy phone use and even topped up my earbuds. It charges up pretty fast overnight, and the slim build fits perfectly in my jacket pocket without feeling bulky.

The magnetic attachment clicks on with zero fumbling, and it’s slim enough to slide into my jeans pocket without a bulge. I’ve used it twice on a long commute and it’s already topped my phone up from 20% to full in about an hour.