USB C

[Calamityspice]

I have a Zendure 10000 mAh powerbank. It has USB 3 & USB C connectors.

On the USB 3 {USB A} it charges fine. Albeit slowly.

On the USB C however, it sees the Cosmo as a charger rather than a chargeé.

My other 2 USB C devices both charge fine from a USB powerbank.  GPD products. GPD P2 MAX & GPD Micro PC.
 
Any suggestions?

[gidds]

Have you tried both USB ports on the Cosmo?

(If it's like the Gemini, the left-hand port generally acts as the device: receiving charge and connecting to a desktop &c — while the right-hand port generally acts as the host: controlling mouse and keyboard and connecting to storage.  There's some overlap, but some things only work on one side.)