Hi,
I am in the states and we live in the San Francisco Bay Area. I'm building an earthquake preparedness kit. We recently bought a power pack. It is an inverter that holds a charge and can power my sons equipment for up to 10 hours. It plugs into the wall outlet to charge, or can be charged in the car or boat, via battery. You then plug the equipment into the power pak. We love it! It has two outlets so you could run a neb and vest simultaneously. It's called "XPower" by Xantrex. Lots of contractors and campers use it because you can charge it while driving to the camp or job site and power small appliances with it. It comes in quite a few sizes.We've done treatments during a couple of power outages.
Dee Dee
Griffins Mama (21 mos Today! wcf)