You'll kill the battery in fairly short order if it's going to spend most of it's life plugged into AC power - don't expect the battery to last anywhere near the rated number of charge cycles, nor to retain rated full charge capacity over its lifespan the way a normally used laptop would.
You'd want to cycle the battery a couple times a month, which realistically probably means running on battery say once a week and draining to say 30% capacity each time (that would put about 3 cycles on the battery a month). Going below 30% puts more strain on the battery than you want - 30% is a good number. I think 3 cycles a month is still on the low side for optimum health, but its better than nothing.
__________________
-Scott
|