STK's Canon-7D Battery High Capacity 2600mAH

I ordered 2 batteries for my Canon 7D. However, they didn't hold a charge when charging with Canon wall charger. Could've been damaged in delivery, who knows. So I contacted SterlingTEK customer service on their site, briefly told them the matter and requested they called me. Armando from customer service called me immediately the next morning [I sent message after midnight just a few hours prior]. I figured we were screwed and would have to pay for new batteries or AT LEAST pay to send faulty batteries back to manufacturer to get new ones. Yea I was a bit off..Without even a slight hesitation they insisted on sending 2 new batteries AND a free wall charger for overnight priority delivery. Without me having to send anything back to them or verify anything. At all.Yes, it was the right thing for them to do [in my opinion]. But when was the last time a company did that? I can deal with a couple batteries not working with customer service like that [Armando the CS rep is brilliant]. They have my business for anything I need that they have a product for and you'd be wise to do the same.Not to mention the great price!First time writing a review about any product, ever..but I felt compelled because I believe this is a great company. I would've given 5 stars had it not been for the malfunction.

First, the good:1) the battery gives electricity2) works in 70D3) the price is very attractive.4) delivery was fast, within 2 promised days with amazon primeThe bad:1) Charged using original Canon EOS 70D charger the charging lamp blinks all the time. That does not change no matter how long I charge it, even after 48 hours. So, there is no indication is it charged or not, or when the charging is finished - that is the biggest disadvantage IMHO. Or maybe I got a defective battery?2) Canon EOS 70D warns that the battery is not recognized. But after pressing OK, camera works normally and displays an icon of fully charged battery. I haven't used it enough to tell how many pictures will one charge hold.Bottom line: I might got an defective battery. If I had any indication on the charger that charging is finished, I could live with camera warning that battery is not recognized, and it would be almost perfect. But in the given situation, I cannot give it a very high mark.

I purchased this battery almost exactly two years ago and it holds a charge just about the same. I was in the market for a backup battery to have for events. Over the course of two years I have been able to compare this battery to my Canon ones as far as how well it holds up throughout the day.First off: I will say that if I have this battery in my camera I know that the charge will not last as long during an event as one of my Canon batteries. Usually I do not start with this battery in my camera to avoid not having a charge at one of the more important moments at a wedding. However, on the occasions that I have started with it, I have noticed that I am about mid to low on battery by the time the reception starts (on average about 5 hours of shooting at this point). I recently photographed a wedding in Seattle and it was about 50 degrees outside, and just from the getting ready shots (approximately 200-300 in and mostly indoors) I noticed the battery display was already on one bar. I know batteries tend to run out faster in the cold, however, I was able to compare the Canon one to this after I switched it out for the remainder of the event, and can say the cold weather affected this battery much more than my canon one.Overall, I would recommend this battery as an absolute backup battery to have in case of emergencies, but I would not recommend relying solely on this battery if you are an event photographer or shoot for long periods at a time. If you plan to use this battery for non-professional use you should definitely be fine; you will probably just have to charge it after each use.

I wish I'd had the opportunity to use this product more than once before the return window closed on May 15th. It worked when I used it for a shoot in late April/early May.June 1st, right before the band I was shooting was to take the stage (I'm a music photographer), I popped it in my 7D, and... Nothing. No power to the camera. I tried turning the camera on and off a few times, took out the battery, put it back in. Still nothing. A fellow photographer had a charger, so I put it on there, and the light blinked rapidly, so the battery should have worked. But it didn't. I gave up and used the remaining time before the band's set to charge my Canon battery enough so I could shoot the performance. Thank god THAT ONE worked. I really wish I could get my money back on this, since I have absolutely no use for it.