I have the 2.5MB version of the card (Stacked thanks to Garland), and I back
up my files weekly. If you use the serial port often, I would also think
about using an A/C adapter to save the stain on the batteries (at least while
you are connected serially). But I haven't had files hang either. But, then
again I don't go too far past the original design with INI modifications that
may leave a lot of file hanging out to get chopped in a low battery
condition, and normally replace the batteries very shortly after the first
warning..
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