<html> <body> Hello Colleague, In September 2003 I purchased the Axim 5 hand held computer from Dell Canada.  In October 2003 the following message dropped down: "Backup battery very low.  To prevent possible data loss, replace or recharge your battery according to the owner's manual." I contacted Dell and they replaced the original backup battery.  In the meantime I purchased a backup battery from a friend who is a whole seller of batteries.  He measured the "defective" battery and claim that the battery is still good. Since than I bought 4 separate backup batteries from my friend because for no reason at all I have been receiving warning messages about low battery charge. Before I pursue this problem any further I decided to experiment.  Using two batteries which were "defective" I replace one with the other when I received the warning.  Interestingly enough when I replaced the old battery with the "new" defective battery all looked well.  Backup battery showed 100%.  The next time I checked the battery in the system it showed 70% charge only. (I haven't used the computer at all)  At other times when I replaced the battery with a "new" old battery it showed 100% and then within 2 seconds the bar got empty and showed 0%.  This happened several times.  Sometimes I was able to use the computer with the "defective" reading at other times the dropped down window kept warning me. Interestingly enough I have 5 backup batteries (CR 2032 Lithium) which read being fully charged when I measure the charge with a meter outside of the computer, but from the computer I am getting warning messages of low battery charge. What makes me suspicious is that it happens irregularly.  In another word this problem occurs intermittently. When the main battery charge shows 70% I always recharge it.  I do not drain the batteries.  Also I am semi retired meaning that I do not tune and use the computer every day.  It happened in the past that the computer was sitting in the cradle for days and when I checked the charge level it showed less than the previous time. The computer is used only for tuning pianos using Tune-Lab.  There are no other files such as calendar, customer files, etc. My questions are: What am I doing wrong? Anybody had this experience? What was the solution? Any feed back would be appreciated. George Takats</body> </html>