15 of 17 people found the following review helpful
D5100 battery grip,
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This review is from: Neewer Pro Battery Grip for Nikon D5100 5200 D5300 DSLR Camera Compatible with EN-EL14 Batteries (Electronics)
Apart from the rather cheap feel and the inconvenience of having to use a cable if you want the vertical shutter release (I haven't bothered with it) this does the job very well.
It is extremely good value for money - just be careful to read the instructions first. If you attach it with the batteries in, you get a warning message saying it is not compatible. Attach it to the camera first, then put in the batteries.
As I said, it feels a bit cheap - but it is cheap. It gives the camera a much better shape, especially for big hands.
It's a shame Nikon don't produce their own, but this works well and is excellent value for money.