Perfect companion with a battery bank for endurance shoots.
349039
I use this with a Sony A7rii.  Have 2 extra batteries and a titan 20amp battery bank. I just swap a battery in camera to this and I've never used the 4th battery.
4762303
I initially purchased this just for the batteries, as the ones I had were winding down after several years of use.  The batteries provided were excellent and seem to hold their charge pretty well - I easily obtained over 150+ pictures with each battery with flash and zooming.  The kit also provided a car charger, which was very nice, the wall charger, a lens cleaning kit (which I have not yet used), and a mini tripod.  The mini tripod was interesting.  It was definitely helpful allowing me to get some shots I otherwise would not have been able to.  But, with its "mini"-ness, I had to reposition the legs to ensure it stayed upright - it looked like a splayed giraffe missing a leg at some times, and at others it looked like some kind of contortionist with a third leg!  Now, understand, my camera is heavier than most, and the screw/hole for the tripod is not centered on the bottom of the camera.  So, different camera models may have more luck/less humor  :-)  Overall, a great product that I would recommend.
1047523
Don't get caught with a dead battery at those important moments.  I found the Maximalpower NB7L Battery for Canon Powershot SX30 IS to be a great value for the price and it holds a charge as well as the costlier Cannon battery.  I carry one or two charged backups with me for every important event I plan to shoot and now I don't worry about running out of juice. For great savings and peace of mind, it's a no brainer!!
3654480
This is my first external battery and I really like it so far.  I believe it'll be very useful when I'm camping and hiking this spring and summer because I love taking pictures and that is a big drain on my cell phone's battery.  This battery, with it's 4400 mAh charges up my phone at a pretty good pace and I like that it has a small light on it - that'll be helpful if I need to plug it in the dark!
4655725
Finally a battery pack that allows extended use of the GoPro.  who would have thought!
2207675
Out of all the portable batteries that I have, this is now my standard one to carry.  I have a couple that are more powerful, but I cannot stress how small this is.  I often go to theme parks (usually Disney World as I'm a local in Orlando), and as you can guess, my phone and camera can rapidly be depleted of their charges.  This alone ensures, at least on my equipment, that I can get two full charges on the phone or one on the phone and one on the camera.  To be honest, I could see carrying two, but one is more than enough for now.  So, are there more powerful ones?  Sure, of course.  But 4000mAh for the incredibly small size is worth every penny, and I cannot recommend it enough.  It's also sturdy and has a genuine quality feel to it - an added bonus.
1924646
This is a worthy addition to all X100 users out there who doesn't have a spare battery. i'm using an X100T camera and its a great camera but one of its flaws is its battery. It has a very small battery that won't even last a day of shooting. This purchase complements it and give you 2 extra batteries with a charger to boot. Not to mention there is a car adapter included so you can charge while traveling. I also like that the charger is small and plugs directly on your wall socket.
682503
This product is an absolute *MUST* have for the road warrior.  The battery is extremely light, has a great form factor, so that it fit easily into a briefcase or laptop bag. Unlike most external batteries, this one requires NO additional power cords. With a mini-usb connection and an iPhone/iPad brick, or really any USB delivering brick, this product can receive its charge. The unit comes with a short mini-usb cable, so again, the simplicity on wires, chargers, and weight. I wasn't 100% sure I would find myself needing or liking the included laser pointer or flash light, but both have come in extremely handy. While in meetings all day, it's great to have sitting on the table charging my devices, but I've found myself grabbing it and using the laser pointer during meetings. The flash light has come in handy too for finding my keys and loose change. I am amazed at how many devices and cables have been removed from my bag just from buying this product.
1143556
If you have a clean power source this is great for all day shoots where you don't have to worry about changing and charging batteries.
2523750
I had this in my bag during a recent trip to Plymouth, MA, where we took lots of pictures -- my battery ran down in the middle of the Jenney Grist Mill tour but I just plugged it in and kept on shooting without missing a beat. The flashlight feature is handy, too.
1870749
Great little batteries - no issues other than I wear them out too fast with my constant zooming for the perfect shot! Grab the Kastar external charger with a quick charging plug and you're in business. You can charge your extra battery while you take photos with thenonenin your camera. I kill my battery in about an hour and it takes about that much time to fully charge my battery from completely dead. I really like that charger because you can tell when it's charging and how far t hasto go and whwnnits done, it shuts off. A must have for your camera bag. Your spare batteries and the perfect charger to put with it!
1515253
The battery that comes standard with almost any camcorder usually doesn't last very long.  The solution is to get an extra battery, preferably with extended life.  The problem, of course, is that it takes a long time to charge those puppies.  You can always have a couple ready to go in the morning, but if you are recording all day you'll want to charge up your spare while the other is in use.

That's where this battery charger comes in handy.  I bought it for use with my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Canon-VIXIA-HF10/dp/B001144JQU/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Canon VIXIA HF10</a>&nbsp;and my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/HFS10/dp/B001OI2YNS/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">HFS10</a>, and it works great.  As others have noted it charges your batteries a lot more quickly than if they were plugged in to the camcorder - plus it saves some wear and tear on the adapter plug for your camcorder.

Best of all, this is very compact.  It fits in a little side pocket of my camcorder case and leaves room to spare.  The plug flips in and out for easy storage.  If you plan to get a lot of use out of your Vixia camcorder, this is really a must-have accessory.  Highly recommended.
1986658
Great deal on some good batteries, with a charger that's smaller than the one supplied with my camera. You really should have a spare battery or two with you when you're shooting. This is a good way to do it.
4410940
I looked far and wide for a good battery to go with my BMCC 2.5K Camera and this is the one. I was worried about only getting the 4-5 hours they say it will give, don't let that deter from purchasing this. I started a shoot at 9am and shot til about 5pm and still had 1 bar left on the meter, what I do is shut off the camera during long takes and breaks and it will last all day long.

The battery has 4 green bars that will show the charge rate when in use which is really, really handy. It has a standard 1/4 thread screw that will go into any cheeseplate you have for a rail system. It is pretty heavy so it will add weight to a rig, it would be perfect for the end of a camera rig if you needed weight on a V-Mount system. Make sure you order this http://www.amazon.com/Switronix-Power-Tap-Charger-PowerBase/dp/B00595M3XS/ref=cm_cr_pr_sims_t charger for it or you will have nothing to charge it. Wish it came with but what can you do.

Overall the Switronix PB70-BMCC Battery is very durable and works great, I would recommend this to anyone looking for a BMCC battery.
1042413
Great back up for my stock Tikka battery.  Small and fits easily in a pocket and is rechargeable! Gets the same battery life around 12 hours of constant use.  Great for ultramarathons!
4760032
Nice and compact.  The clip is very secure.  The fact that this runs on one battery is awesome.
1717982
This battery is in short, awesome. I shoot red carpet photos for about 4-5 hours(with a speedlite) constantly and when i used my Canon, it would die around the last hour. This is a problem considering there is still shots to take. When I used this not only did it last 1 entire session, it lasted 2 days in a row with just 1 charge. I was amazed at how much longer it lasted. If you're a serious photographer or even just a hobbyist search no more because this is the battery for you. Now I only use my canon battery if i need a little more juice.
Great buy and no regrets!