I want to connect my wired keyboard to a power bank. I only want to power it, turn on the lights for example. I tried doing so, but my keyboard doesn't light up. The indicator on the power bank and an indicator on the cable itself stay lit when I power my phone for example, but when powering my keyboard they only stay lit for a couple of seconds. Maybe it should be like this since my phone is charging its battery, and my keyboard doesn't have a battery? I don't know. Anyhow, the keyboard doesn't light up.
Keyboard: Ducky One 2 Backlit
Powerbank: Deltaco Slim Pocket Size Powerbank
Outputs: keyboard USB-C ---------- power bank USB (2.1A)
Any ideas why it won't power On / light up?