Question about Digitec Powerbank

There can be several factors for this:

1. the battery still has a certain residual charge and therefore draws less power. Particularly from 60%, the power draw drops to 100% charge.

2. the cable handles a maximum power of 5V, 1.5A, which corresponds to 7.5W. Unfortunately, even the original Apple cable does not always seem to draw 15W.

3. the cable is not MFI. In this case, the charging current may always remain at 7.5W.

Therefore check the following: How discharged is the iPhone battery (remaining charge)? The battery should draw up to 20W between 10-60%. With wireless charging, the iPhone 14 Pro can draw 15W with MagSafe and up to 7.5W with the normal Qi standard.

Is the cable original Apple-certified (MFI), is the mobile charged directly by cable?

If the cable is not an original Apple cable, try replacing it.