The storage in the C series is FLASH based, even if I was to pull the battery out and short as many contacts as I can find it still would have the data contained.
I\'m not even sure if the C series has a built in NiCad memory backup battery. When you take the battery out the PDA reboots, but whatever\'s stored in your /home folder is safe.
Backing up is useful if you use non-standard software to do low level system tweaks. I found that out the hard way. A useful feature that all the Cacko created ROM\'s have is a bootmenu to flash the rom, resize the /home partition and back it up and restore it entirely. I found that mighty useful!