Hi,
Is there a way to leverage a USB power bank to charge the MA2 batteries? The adapter included with the fly more combo does not seem to work.

thanks

That adaptor is to use the batt as a power bank not charge it from a power bank. The batteries can only be charged using the plug in block and multi plate out of the box.

I could be wrong but think the USB adapter supplied is to allow you to charge other (USB) devices from a spare Mavic Air Battery. Most obviously the controller if you're out in the field and it needs a boost. The Drone batteries need a different voltage altogether.