Question about Sandberg Outdoor Solar Powerbank

is not quite right. If the laptop supports it, it works, but most do not. When I connect my Sandberg to an HP Probook, it doesn't charge but it draws power from the Sandberg battery. This could extend the duration of use, but I haven't tested it yet. The tablet can be charged.

Very little can be done with DC 5V/3.0A ...
So unfortunately NO.