Super as a backup battery for my hub dynamo.

I use the power bank in the car. While driving, the battery is charged and also the cascade downstream phone.
In the parking lot, the phone remains energized.

Did it also used sometimes as "UPS" for my PI. Goes well.

Perfect.

EDIT:
Pictured another type is now displayed when the I bought.
My Power Bank is black and bigger. The LEDs are on the top.
Whether the now displayed the successor is, I do not know.