My Acer laptop has been a tank. I got it in mid '07. I'd say it has been "on" for 95% of its life. Occasionally I'll close it and put it in sleep mode. I have the screen set to turn off after 15 min of idle, and that's really as far as I go. The keys are very worn. The center "asdfghjkl;" row is polished from my fingertips, and the little nubs on the f and j keys are totally gone from the amount of typing i've done on it.
I've replaced the battery once, with a cheap ebay replacement, that was like $20 at the most, maybe less. The old one got so bad it would only hold a charge for 5 minutes.
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