Nitecore Carbon Battery 6K USB-C Rechargeable Lightweight 6000mAh Waterproof Power Bank Sticker

This compact and sturdy power bank charges my phone fast. I like that it’s usb-c so that it works for most phones. It’s easy to carry in my small purse and it’s quick to charge it back up too. It does get pretty hot when it’s charging my phone so it’s probably best to keep it out in the open when in use. I like it. I’ve also used it to charge a portable air filter without issue.

Top of the heap. This is all it's advertised to be: small, light, easy to charge and great to use. I sound like an employee of the firm I'm sure but hey when something is good I got to share.

Functionality really good, quick charging speed good utility battery. Life can charge a device fully depending on how low your battery is. It’s really portable. Charging capability really good.

Handy small power bank. Can get a little hot.

Very compact and fairly light charger. Not sure if the battery capacity is 6,000 mAh, but I was able to charge my aging Galaxy S10 plus that comes with 4,100 mAh battery from 19% to full with no issue, although it almost depleted the charger. If I had to guess, I'd say that the capacity is closer to 5,000 mAh than 6K.

This is an excellent little charger. I always carry it in my go bag in case I run low on battery. Gotten me out of a few binds.

Doesn't seem to work for what I bought it for. I bought this to stash on my motorcycle and attached it to GPS tracker so I wouldn't have to remove the tracker weekly to charge it. Neither device registers the other and actually causes the tracker to drain faster. I don't really have a use for an external battery beyond this so it was a waste of money. 3 stars because it is nicely built and I'm sure it works fine for charging a phone or something. Just doesn't work for the purpose I wanted.

Another great Nitecore product. Seems well built, light weight, battery life is as expected and doesn't lose much of a charge when stored, no detectable heat when charging, easy to carry in the pocket. Highly recommend.

Does exactly what it says on the tin

This is a great piece of kit. Compact and lightweight perfect for my EDC. It’s enough to full charge my iPhone once, more than enough to keep me going until I get somewhere with mains. The only thing not giving it 5 starts is the price point.