I used to have a lot of power loss (old house) so I got an acrylic display case (with 10 seperate sections) and ran a single strip of flexwatt down the back. When the power would go out I would put all my snakes in the case and then plug the flex (and reostat) into a computer APC (basically a battery backup for computers). It would last for a day. I could easily check on each snake and keep them warm.