Chris,
I don't feel like reading this thread again, but the only way to have a battery is to have an UPS. Most UPSs have one side that protects with a battery/surge protector/AVR while the other side just has surge protectors.
All UPS will tell you not to plug printer, copier and scanners into the battery side or anywhere in the UPS for that matter. When you think about it when the power goes out, you really don't need to print, copy or scan.
