Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Does it work on a Nikon D5000?
Document: It's a Nikon battery so it works like it's supposed to, wouldn't expect it to not work so very happy with it. ~ MichaelMPerez.com
It is a Nikon Battery with all the nikon packaging and paper work.I will order another one when the time comes.
Battery works like you would expect a Nikon battery to work . Take lots of pictures and is great to have.
This item was not GENUINE Nikon, it was a China copy, it appears to work just fine, but we were looking for a GENUINE Nikon battery like the one that came with our Nikon.
Exactly what I ordered worked well with my d3200. Not a fake nikon battery. Don't go cheap and get a fake because they don't work. Had to return one before I came here.
Love having extra power on me at all time just wish the price was a bit lower. The china brand goes for $14 and last about the same time so its a toss up but with the Nikon you know it will always work.
Do not buy the non Nikon brand. They do not work. I bought two and charged them. Nether work on my camera. Wouldn't even come on. Avoid the off brand battery's and buy quality on your Nikon.
What can you say? Nikon makes the best and they've proved to do so again with this battery we've purchased after market batteries and they either don't work or don't last long. This lasts longer than it says it will and has held up through multiple charges.
I purchased some other batteries with the same model number first hoping to save some money on this pretty costly battery. Unfortunately only the Nikon labelled battery will work in the D3100. So if you are thinking of one of the cheaper knock-offs, don't waste your time or money.
The description for this item claims that this is the correct battery for the Nikon D7000. It's not even the right shape. This battery does not work with the D7000. Amazon should change the description. I am sure it's a great battery for other camera's, but I am giving it 1 star for a misleading description
Answer: The other two posters are correct. This battery is only for the D5100. The D5000 takes the EN-EL9 or EN-EL9a battery.