[4mula]

I've done a lot of searching so forgive me if it's already been discussed. I'm wondering if anyone has added a backup power source for their mpguino, like an additional 9v or watch battery for when your car battery dies or connection is lost. Maybe there is even some kind of power reservoir that you can add inline that will store just enough juice. Recently I've lost data a couple times, I may be due for a new car battery, or maybe just doing engine off coasting right before shutting off did it. Even though my car started, it was slow and barely had enough juice so the mpguino restarted. Anyone done it or have any ideas?

Btw on a side note I did add a 5amp fuse inline to protect the mpguino from any surge, is that small enough?