Re: 70D Battery Life?

Depends on many factors, especially for the 70D and its new AF system which I think its the most battery hungry feature! Another factor is if the lens has IS or not. To be honest I havent made a test or anything but from my experience if you have the AF always ON the battery will not last more than 30 min! So, what I do is switching it Off between takes (swithcing off the camera is even better of course). I always carry with me 5 batteries for a wedding shoot and charging them at least one time more through the day! Keep in mind that only 2 of those are CANON OEM (those last longer).
 
Just FYI we make a quad simultaneous charger for LP-E6 batteries - useful when many of them need to be recharged real fast.
 
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