AUKEY Power Bank 20000mAh Portable Charger with Lightning and Micro-USB Input, Dual Ports 2.4A for iPhone 7/ 6s, Samsung S8/ S8+, iPad Air, Tablets
Priced at £22.99 this is an affordable portable charger that should last a single user a long weekend without needed access to a plug socket. It is great for the likes of me when I go on press trips and I am constantly on my phone, I can just have the cable dangling out of my bag and have it constantly charging.
The obvious downside here is the size of it, it is not pocket-friendly at all and it will add a noticeable bit of weight to your bag. This is unavoidable due to the nature of battery technology.
You get a lightening input so if you are a die-hard Apple lover and refuse to carry an extra micro USB cable with you then this is a great feature.
However, looking at Amazon, while this is a great power bank, I would be tempted to purchase the similarly priced AUKEY 20000 mAh Quick Charge 2.0 Power Bank. You pay an extra £1 at the moment but you get Quick Charge 2.0 which will be a huge benefit if any of your devices are modern Android phones.
Whichever product you choose, they will work as intended and the quality of all AUKEY products seems to be excellent.
Also see: Best 3D Printers UK 2017