Instruction: Generate an answer to the question by utilizing the information contained in the document.

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Question: Can this battery be used with the original Canon battery in a battery grip?
Document: I used this with the original battery that came with my DSLR (Canon Rebel T2i) in a battery grip... fantastic use, had all day battery between the two of them.
I'm not a fan of third party batteries, in the past I've used ones that simply don't hold charge or last as long as original brand. So far these have proved to be a good purchase, especially in combination withPhotive Battery Grip for Canon EOS Rebel T4i, T3i, T2i (Replaces Canon BG-E8) PH-GRP550D.
I have used these batteries for a couple of weeks now. I can tell no difference from the original Canon batteries other than these last longer. I use 2 batteries at a time (grip), and have snapped ~1,000 shots without the battery bar going down once.These batteries are packaged well and shipped very fast.It took about 2 hours to get to a full charge out of the box. If you are looking for T2i batteries, look no further!
i will keep this short and sweet,cheap but works just as well as my Canon battery! I used this with a battery grip and never had any problems what so ever...enjoy!
Used it for a bit in my grip, so hard to tell how great it is, but if it charges and lasts a long time like many others say, then it's definitely a great investment, especially compared to the canon brand pricing
This is one of the batteries in my dual battery camera grip. Along with the stock battery I have more than doubled my shooting time. It has a higher mA then the stock battery but charges just as fast. I haven't used ti on it's own but if I'm more than doubling my shooting time I'd imagine it holds a larger charge
The battery grip is very well made. Just received during the holidays and its not very well tested or used. For this reason, its unfair for me to go into detail of this product. Insofar, I have no issue  with the grip and its well worth the money . Until its tested and used for a period of time, I can only give it a 4 Stars. By all indications, its a winner  !
I've used these batteries for 17 hours non-stop and couldn't drain them. With a battery grip that used two of these batteries simultaneously, I took over 6,000 photographs and the battery indicator was still FULL! I never thought a battery could go on and on like this. Amazing.
I will definitely be ordering a few more of these in the near future! I just used the two I bought a couple weeks ago, used them both yesterday and today from approximately 1030am to 3pm and the batteries (used in a grip) lasted an entire day, with sessions back-to-back, occasionally 10-15min in between. The battery meter doesn't work all that great BUT enough so you will know you need to change batteries soon. Absolutely pleased with this product, and the shipping was fast!
As a full time student, the price of original canon battery is too expensive for me.I bought two pieces of this photive batteries for my Canon T2i. i was worrywhen i tried this battery to my camera for the very first time.Then my worry gone since this battery work really good like my originalcanon battery from camera package.Now, i use this battery on my battery grip (zeikos) and my camera work properly.I am happy with my decision.
Answer: The difference in voltage is 0.2V - the Photive is 7.4V rated at 1700 mAh (or 12.6 Wh) versus the Canon which is 7.2V rated at 1120 mAh (or 8.1 Wh).  Therefore the charge capacity is greater in the Photive versus the Canon.  The handgrip would put both batteries in parallel so as to not exceed voltage going to the camera.  I don't think combining a Photive and a Canon battery would be any different than using an older (weak) Canon battery with lower charge capacity and putting it in parallel with a newer Canon battery with optimal charge capacity - ultimately the newer battery will "carry" more of the load as the weaker battery loses charge.  Because the camera doesn't require more than one battery to operate, practically I doubt whether this configuration should cause any problems.  Note however that in most battery manufacturer websites and in practice, it is a recommended practice to not combine batteries of different types nor ages.  Given the low cost of the Photive batteries, I would simply buy two Photives and load then into the hand grip.