Capsula max and usb charger

Hi Everybody,
Could you tell me how I can connect it to a power supply like a usb charger .

I can travel many days without access to a house (and wall charger) to reload my Capsula. it’s why i carry anker USB C Charger to charge my phone, camera and i was expecting to do the same with the projector.

But the cable is just for wall charger not for USB (C or mini) charger.

So , what can I solve my problem ?

Thanks for any help