[theoldwizard1]

Originally Posted by Ormston

The easiest 12V backup setup I could find was picoUPS-120 12V DC micro UPS system / battery backup system

This handles battery charging and regulation to the load.

This does look nice !

I would put my AC power source on a cheap mechanical table lamp timer and set it to run 10-20 hours/day. This way the battery does actually get partially discharged and recharged.