10 years is an impressive amount of time for a digital camera to last, for sure. My impression is that the average lifetime of an average digital camera would be more like 4 or 5 years.
Batteries that are about 5 years of use old are old indeed. It might doubtfully be the batteries starting to age that is provoking the error, but it is more likely to be the camera's age itself, plus a little exposure to damp and grit... which tells on such devices over time.
Whether a camera that old is worth repairing is up to you. But if you think it worthwhile, try replacing the battery with a new one. The new replacement battery needs to be charged up for 6+ hours before its first use, owing to its having been on a shelf for a considerable time.
Also, try cleaning the terminals in the battery compartment, after removing the batteries, first by rubbing off with a fresh pencil eraser, then by wiping the terminals off with cotton swabs moistened in rubbing alcohol, then letting them dry off for 5+ minutes with the battery compartment door open, then try turning the camera On again.
If you wish, after trying the above, to have the camera sent out for repair, go tohttp://usa.canon.com/cusa/consumer?pageKeyCode=onlineRepairLanding
Let me know what you think, and what happens, please.
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