CUKTECH sent this unit out to me a few months ago and since then I have been using it regularly throughout my work. While my CUKTECH 20 battery bank was provided free of charge directly from CUKTECH themselves, this in no way affects my thoughts or opinions on the product and I am not sponsored or obligated to say anything good about the brand or product.
I have been using the CUKTECH 20 to keep my action cam powered when recording 1st person pov and slowmo shots for long periods of time or when needing to quickly recharge my phone and other devices while building with digital instructions. I have owned and used many portable power banks over the years for all sorts of purposes yet this one by far stands out as the highest quality and fastest of them all; the built in screen shows useful information such as charging time, available capacity, voltages, and more while the high output power charges my devices faster than any of my wall chargers.
Ultimately, time will tell if it is built to last but from my experience so far I'd say it seems to offer a good value for money while also being much higher quality than any portable power bank I have owned in the past.