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Question:

How long do SLR Power Battery Packs last?

I am finally going to upgrade to a digital SLR soon and am trying to figure out how long these $250 power battery packs (that clip on to the bottom of the camera) last compared to a small $30-$60 battery. While there are reviews, this is the most important aspect of the item I cannot find. How long does this last and how much better is it than 1 or even 2 extra batteries?

Answer:

Usually the battery grips allow you to use 2 of the regular batteries in the pack, so you will still have to get the extra batteries. Mine came with an extra cartridge that can take AA batteries as well, which is a good option in a pinch. It has been my observation that the extra battery in the grip lets you draw more power from both. When I first started shooting professionally, my mentor told me the biggest rookie mistake was not having back up batteries. I would get the grip, and have at least a total of 4 batteries per camera (two for the grip and two charged or charging)
you can ask for the after-sale center to learn about it or google it.it is a little difficult to say correctly,it all depend on the models.
It depends on who makes the camera and what model it is. The best way to find out is to google the model and then search out with the keyword reviews. Regards, Rob.
forget photograph voltaic charging on a similar time as backpacking. even a 5W panel that's 12 through 24 will take over a million/2 the day to do the charging. except you want to sit down down all day and might charge, greater suitable batts are a thank you to bypass.
Are you talking about a battery grip, like a Nikon MB-10, or an external power pack, like a Quantum? If it's the battery grip like the MB-D10, it depends on the power source in the grip, one EN-EL3e, 8 AA batteries, an EN-EL4 or an EN-EL4a. With a Quantum, you should be able to extrapolate current information, with their technical specs, i.e. a EN-EL3e has 1500mAh, so see how many shots that battery will take through online tests that are published. Then look at the technical specs on the Quantum, and see what the mAh capacity of that battery is. Then some basic math, and you can see what the expected performance should be. With something like a D300, the quantum is overkill. Add an MB-D10, and a Nikon EN-EL4a and you could take 3,000 shots or more. Using 8 AA NiMh you can get 1500 or so from AA, and then some more from internal battery. I prefer the AA battery packs, you can buy the batteries anywhere.

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