5D4 internal battery replacement

langdonb

EOS M6 Mark II
Jun 21, 2013
94
3
Thanks! Oh, that would explain why I could find nothing on online searches! I'll research that side of explanation
 

Antono Refa

EOS R
Mar 26, 2014
1,327
434
Thanks! Oh, that would explain why I could find nothing on online searches! I'll research that side of explanation
If it had a user replaceable date/time battery, it would have been mentioned in the user manual, same as the 5DmkIII.

Page 53 of the 5DmkIV user manual says "The date/time/zone settings may be reset when the camera is stored without the battery, when its battery becomes exhausted, or when it is exposed to below freezing temperatures for a prolonged period", which is when I would expect an internal capacitor to run out. If the camera 'forgets' those setting in other situations, my guess would be the capacitor is defective.

As Lithium ion batteries don't generally leak, I think its safe to keep the camera with a battery in.
 

Mt Spokane Photography

I post too Much on Here!!
CR Pro
Mar 25, 2011
16,698
1,665
I looked at Lens Rentals for a button battery soldered to a board or a large super capacitor. I decided that its more likely that they used just a ordinary capacitor, maybe the one shown in the photo that is located on the battery board.

5div power board.jpg
 
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