Great battery - charges up quick, handy that it can be strapped most anywhere.
The cap is a bit tough at times to pop off, especially with cold hands in the dark.
I had a Topeak USB battery pack designed for road biking. I probably bought it about 2012. When it died, I tried to replace it with the same, only to find them no longer available - anywhere. That was a blessing in disguise, as I found Knog. Better batteries, better form factor, more mounts, more flexibility, and state-of-the-art design. The PWR Bank is easy to charge, easy to see the remaining capacity, and it lasts at least 3 and sometimes 4 rides powering an iPhone 12 Pro Max. I'll be buying many more Knog products in the future.
Very well designed and plenty of power. Have been using for daily commuting over the last 2 weeks with no issues and still on 4 bars. Very happy!
I love the modular design of these Knog lights making it useful in so many ways, great for camping and bikepacking