6 of 6 people found the following review helpful
drains the Canon battery,
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This review is from: Pixel Vertax E-11 Camera Battery Grip for Canon 5D Mark III (Accessory)
First let me say that the build and finish quality of this product is excellent. It's just a grip, so it won't feel as solid as the actual camera and the shutter button feels a bit less responsive, but it's nice and sturdy. Besides, from what I hear even the Canon grip is not perfect. So far so good. Really nice.
But the deal-breaker for me was the battery drain. Ever since I've owned a 5D Mark III I've been amazed at how long the Canon battery lasts. It lasts forever, even with the camera on in standby.
Not when I had the grip attached. The battery was drained empty the next day. I don't care if there are ways to manage (taking out batteries as soon as you put your camera aside), I want simplicity and peace of mind, not another thing to worry about.
I also tried the grip with 6 brand new Duracell Ultra Power AA batteries. The camera's battery indicator came on briefly showing empty and then turned off. The camera didn't even attempt to start (and yes, I triple-checked connections and the batteries polarity etc). Something is off with this grip (maybe just my copy). It consumes power. For what? What is it doing? Odd. Back it goes. No longer my problem.