What power bank!

What power bank? This channel will guide you through the minefield of each power bank. We will describe the units and all their Functionalities, sockets, inputs, outputs, add-ons, extras, etc.
This will be a genuine full tour of each unit; you decide which would best suit your needs. I will tell you about my likes and dislikes for each unit.
Please bear with us; this is a new channel, and we are getting up and running soon.