UR22 MKII - a question

Hello to everyone.

I’m wondering whether the UR22 MKII can use a USB battery as a power source while connected to a laptop via USB, thus extending the laptop’s battery life in ‘‘no AC outlet nearby’’ situations in the field? I haven’t found any answers to this so far, and have no USB battery nor an UR22 MKII unit to test it out.

Anyone had experience with it?
Much appreciated.