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Old Tuesday 19th January 2016, 15:33   #2
Chris B.
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Join Date: Oct 2007
Location: Pennsylvania
Posts: 138
I would suggest using AA batteries as a last resort...

The 7DII is a power hog; perhaps the most power-demanding Canon camera I've ever owned, and I've had quite a few over the years. I use the 7DII with the Canon battery grip, and carry 2 full sets of spare batteries with me when I go out and shoot. That said, I've had better performance with non-Canon branded batteries than the OEM ones, but typically get less than 1000 shots on a set of 2.
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