- Jul 14, 2002
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I have a 5-6 year old TI-89, I use it semi-frequently, but it powers down after like a minute or so of inactivity to save the batteries. However, I find myself replacing the batteries about every 2-3 months. Normal?
Originally posted by: halik
i've changed em maybe 2 or 3x after the course of the past 5 years. I used to use it a lot too, the batteries would least at least a year