A:Answer All I can say is, "Probably."
The key issue is the amount of power you need, not the number of devices plugged in to it.
You could have splitters plugged into splitters, and run 20 alarms clocks with no issue.
Yet it could not support a single, power-hungry 70-inch plasma television.
So the biggest question really is how much power will your devices draw, and how long do you want the backup to provide power before the battery runs out.