Basically as the title says. We have semi frequent power outages where I live. The noise machine in my daughter’s room goes out and wakes her up. If I were to buy a USB powered one, plug it into a power bank like one of those 10000ma ones you get for charging cell phones, would it have continuous power. Basically like a cheap UPS
They make and sell mini UPS devices. Usually marketed for modems and routers. I use one of those and they have several hours of autonomy for low power consumption devices, and they don’t beep uncontrollably like regular PC UPSs.
Yea I think this is the way to go. I’ve got some Cyberpower UPSs around the house for tech equipment but even with the beeping muted they’re still pretty noisy (like a buzzing). Looks like these mini ones might be the way to go.