01-02-2013 03:50 PM
I have a 7D about 3 years old now. One battery is original , the other is 6 or 7 months old.
I upgraded to the latest firmware version 2.0 shortly there after (Don't know if there is a relationship?) one battery could not communicate, the other worked fine. I recharged it and it worked one time more then errors after that. the second battery worked for about 3 more days then it failed to communicate as well.
Questions
1. Batteries ?
2. Charger issue causing chip in battery to go bad?
3. Camera battery sensor chip gone bad ?
Any suggestions?
Thank you
Jimbo
01-02-2013 07:47 PM
Try cleaning the contacts on the batteries and in the camera with an eraser.
Hope this helps.
Pat
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