Great Backup Battery!
923008
Great backup battery.  Gives my Samsung Fascinate a solid recharge, easy to carry in a pocket or purse, and easy to recharge so that it is ready for my phone again.
2302273
This battery has worked well as a backup for my kids sporting events. I haven't missed any action yet.  I wouldn't leave home without it.
611107
I love this backup battery! It has two different charger ports. The one with a single lightning bolt is what I use for my iPod, the one with the second lightning bolt is perfect for my Google Nexus 4 phone and my Dell tablet. It charges my phone from dead to fully charged in about a half hour. It is compact and light enough that I can keep the unit in my purse, along with the USB cords. The best part is that the battery backup holds a charge for a really long time and I don't have to charge it unless I use it.
729592
Bought this battery as a backup for my ambient weather emergency alarm/radio/clock. Hoping to never have to use it but in the event of an emergency you can never be too prepared!
1191994
I replaced an old Ryobi that didn't want to hold it's charge for more than 1 hour.  This battery holds a charge for over a week, with constant use!  I left it alone for 1 month last month and was still able to use it without pre-charging it again to assemble some furniture!  It's worth paying more for this type of battery!
944535
Good battery, I use it as a back up for my camera.  Its well and works well.  No problems thus far.
3517886
I got a Canon camera for my husband for military retirement and knew he would need another backup battery. So glad I found this battery to help him out!
4706056
I use this battery as a back up.  When one battery goes bad, I use the other while recharging the first. Works great!
1606469
I bought this battery to go with my Canon Rebel XSi. I've been doing a lot of work lately, and one day I was about to go out and test a lens and found out my battery was dead! Though the XSi's battery life is great, I decided I needed to shop for a spare battery. I saw lots of off brand batteries for a few dollars, but I wanted a genuine Canon battery. I found this and was amazed at the price, I remember these being 2x-3x as much a year or so ago. I bought it, even though I was scared I might get a non-canon battery instead of the real thing. To my surprise it was genuine, and works just as well as the battery I received with my camera.

With most batteries I would say go for the off brand and lose a bit of battery life, but with these I would stick with OEM seeing as how they're really cheap.
2705548
This battery works as it should. Snaps snug into charger, charges quickly and fits well in camera. Lasts a long time taking video and stills. I like having two fully charged batteries on hand at all times just in case! Batteries of any make or brand are subject to failure and are not 100% reliable.
4822408
Awesome backup battery. Charges my S7 Galaxy and GoPro very fast. Great value.
286750
Works great, and has longer usage time than original battery.  Would recommend this battery to anyone who needs a replacement or a backup.  I purchased it as a backup for when I am out and about shooting pictures, or at a holiday family get together, a birthday, or 4 of July parade and run out of battery so I bought this battery as backup and am very happy with it and have used it quite a few times when original battery became drained.
4641808
I read a lot of the good and bad reviews for this battery and I must say that I have not had an issue with this product.  To be honest if you can afford a Nikon battery get it, but if you need a quick alternative getting two batteries and three different ways to charge this unit for less than $50 is not a bad trade.  I have only used one battery so far and haven't even take the second battery out if it's plastic bag.  I didn't run into the issue of battery life not lasting too long, but I would use his battery as a back up, not a primary to my Nikon.  I actually used this battery at wedding and it worked like a dream after my Nikon  was drained out.  I would suggest everyone buy it and keep it in their camera bag as a back up.
2791014
I bought 2 as back-up batteries for a 3month film shoot. These batteries were great, didn't drain quickly, were reasonable to charge and didn't cause any issues with a Canon 60D or 5DIII. I keep spares of these handy for shoots and recommend getting 1 or 2 as an alternative to the overpriced-but-do-the-same Canon stock batts.
3067030
Like many others, I though I would take a chance and try to save some money when getting a backup battery for my new Cannon Elph 100 HS Powershot camera.  The gamble appears to have paid off.  I was somewhat concerned at the battery life issues some people have reported, so after receiving the battery, I immediately charged it to full capacity and set out to see how long a battery life I would get.  Well, I got over 55 minutes of video recording time.  Hopefully, I will be able to see these kind of results for a while, so rest assured, if I see a marked decline in battery life from this battery, I will definitely update it here. Thanks!
4092331
These batteries last for a very long time!  It is still nice to have a back up for when you are in the middle of a project!
2741961
I got these as a backup battery for my Pentax Optio W90 digital camera.  I'm usually leery of aftermarket batteries, but this is a great budget priced battery to replace a dead/damaged original battery or just to have extras on hand. Would buy again.