Maybe not 120v, but it looks like it uses a DC adapter, a little bit of solar and a battery might be able to take care of it. Even easier if it is a 12v input instead of 5-9, but even then you could work around that with a simple buck converter.
It is 5v 500ma. You can power that off of a USB port. Plenty of 12v to USB adapters out there.
I'd like to know if anyone here gets one; how well do they think it works?
I'm always concerned about my RV and tractors over the winter storage. I'd spend that money in a heartbeat if there were first-hand testimonials offering praise.