Our measurements prove it: With a few exceptions, the manufacturers' battery development is going according to plan - even at Apple. On average, the battery life has increased by almost an hour compared to the previous year. The Chinese mobile phone manufacturers remain at the forefront when it comes to charging speed.

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...