mavic air 2 charger

I have been flying my Mavic Air 2 for about 7 months now, and I'm satisfied. One feature I'm missing is the ability to charge using USB. As far as I know that's not possible, but this website says otherwise. It says that you can charge a battery using the powerbank adapter that's included with...

Hi fellow pilots, is there anyone in the Aberdeen area that could give a lend of a charger this weekend? I'm over from Northern Ireland and have forgotten the charger. I'm flying the Mavic air 2. Weather is supposed to be nice so would like to get out and show my brother the new piece of kit...