»The small LCD displays the percentage, and in testers, this proves surprisingly accurate until the battery is almost empty. A Danish test yielded roughly 4.5 days of iPhone usage with their charging rhythm (from below 10% to 80%). That is exactly the promise of 20,000 mAh: not infinite, but certainly a long weekend without a power outlet. Recommended retail price €32.99, often found for around €27. For a 20,000 mAh battery with a display, PD20W, and a cable you can't forget, that is a no-brainer for the pocket-sized category.«

ereviews.dk:

»The Sandberg Powerbank 20000 PD20W Connect is a really nice powerbank with a built-in USB-C cable. With a capacity of 20000 mAh, it is also approved for taking on board airplanes. And that, together with the reasonably compact size and a fairly accurate display, makes it stand out!«