The Anker power bank has enough juice for many laptop batteries. I really like the look and quality of it. It also has a practical display that shows you useful information such as the current charge level, temperature or the number of charging cycles. However, only time will tell whether the automatic rewind function of the upper USB cable will survive outdoor use...

Charging capacities that are too low, exaggerated wattage figures (which only result in ideal combinations), losses during charging: It's amazing how many weaknesses can arise in a supposedly simple product like a power bank. Good thing we tested it. The test winner Ugreen Nexode 165W can charge two notebooks and a mobile phone in parallel, wastes little power when charging and manages to fully charge...