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 this work for a 7D?
Document: I was really skeptical initially but did not want to shelve additional dollars after I has a good experience of using an aftermarket battery grip for 7D. I have been using this for six months now and there has been no issue at all. This is a great bargain.
I love having a grip when I shoot. This is not the worst I've ever seen but its not the best either. base of the grip is much thicker than the camera body. This makes holding the camera vertical harder, kind of defeating some of the benefit of having a grip. I will definitely be keeping my eyes open for an alternative aftermarket grip. But as this is one of the few available other than from Canon at this time for the 7D it will get the job done it for now.
As with a similar grip I bought a year ago for my previous EOS 60D, this grip is a much less expensive alternative to the Canon BG-E14. It seems to function just as well as my last Canon grip (one I bought for my EOS 7D).My only minor complaints about the grip are that its leatherette surface material is a bit different than that of the camera, and that it has a perceptible odor that is dissipating with use and exposure to air. (The latter seems to be a common complaint with Chinese knockoffs; I hope these VOCs aren't carcinogenic.)
I was scared to purchase then said what the hell try it. So glad I did they work great!!! !
I ordered this for my new Canon 70D camera and it works as it is supposed to work. Much cheaper than Canon accessory and does the same thing.
works extremely well, fully functioning with my 70D; haven't tried the separate battery pack yet, but I'm sure that will work just as well as the whole grip has.
This is my second purchase of a 3rd party grip for my Canon cameras (70d and a T2i).This one worked as expected and I always like the option of having 2 batteries for increased shooting time.All the buttons seem to work well.
Looks great, nice, almost can't tell from genuine Canon grip. Both the battery trays (AA & LP-E6) it keeps dying. IDK if the trays are loose or what, battery door also has clipped to the grip for support, but it doesn't work well. It doesn't powered up on most occasion, with fully charged batteries or new AA.
This is one of the worst abuses I have seen in recent years and anyone giving the product or company the time of day must work for the company. The reason I say "The Company" is because Neewer does not even exist! Do your homework people. I see a few of you posted that the product did not have brand markings and a few commented that it was the wrong brand (Voking). Well that's because Neewer is a Chinese distribution chain which uses many aliases and its only goal is to undermine real manufacturers and consumers.
I've been using my Neewer battery grip for about a month now and what a difference the grip makes in weight and battery life. If you don't have a need for a grip and you're weight conscious, this will make your gear a lot heavier. If you need the alternative shooting capabilities this grip offers along with extended shooting capacity due to two batteries then this is a great option. I found the fit and finish to be extremely close to the finish of my Canon 70D body. All the buttons and wheels work as expected.
Answer: It works on my 70D but won't on my 7D