My main camera is a Canon 5dmkiv and I'm a big fan of backup batteries (the camera is battery hungry!) but the OEMs are extremely expensive. My current three Canon batteries are aging, I needed something new for my camera.

I have several Edelkrone motion control products that are also battery hungry and are powered by the LP-E6NH. I order third party batteries for the Edelkrone gear and that was my original intention of trying them out.

These are closer to Canon's surface than any other third party. They charge well with the included charger or Canon's. (And the included charger does a great job with the OEMs, too.)

My 5div recognized these batteries and displayed them at 100% charge and three bars of charge power (max), allows me to register them - gives the same information I get from the OEM. After checking that, I decided to actually use them to take pictures. For the first time I felt safe doing that with this camera.

I'm having a hard time doing a scientific comparison of battery life. I've used each of the K&F batteries in the camera until they were pretty depleted and they seemed to last about the same as my Canon's, maybe a little longer as those age.

So basically these are high quality alternatives to OEM products at a more attractive price point while still offering excellent performance. I would definitely order more.

I use the batteries for my Sony camera, which is getting on in years. The original batteries do not last as long and the original charger can only charge one battery.

The set here makes a good impression of workmanship. The batteries snap into the charger with a rich "click" and are charged. However, it is not the fastest charger. With a maximum of 9W via USB-C, charging takes a while. But, for this, two batteries are charged at the same time. You are very spoiled with fast chargers from today's world, but the manufacturer's specifications come close to 5V/2.1A. That is max. 10W

The batteries themselves fit well into the device and have a great capacity, especially when compared to the old batteries I own. It's really fun to take several hundred photos (fast serial shots of sports events) with one battery.

The charger itself is very small and very flexible thanks to Micro USB and USB-C. I think that's really great!

I am very satisfied with it, especially with the price/performance ratio you can be really very satisfied.

This rating refers to the LP-E6NH (Canon 5D).

I like that the charger can accept both USB-C and Micro-USB.

It comes with two 2250mA batteries (of course it's not as good as OEM).

It can charge two at the same time. The charging indicator is simple, just red (charging) and green (fully charged).

I like the portability because the original Canon charger is so big and bold and can only charge 1 battery (and no USB).

The NP-FW50 replacement batteries from KF Concept incl. dual charger are of high quality and visually appealing.
They fit perfectly into the Sony A7II and reliably supply it with power.
In terms of runtime, they are not noticeably inferior to the original batteries.
Charging is fast and thanks to the double charger, two batteries can be charged at the same time.

The charger is powered with the supplied micro-USB cable. Alternatively, a USB-C cable can also be used for this. A great idea if you don't have the right cable with you!

I can't find any criticisms here.
A great set for a fair price!
Gladly again!

So this is a set that lasts a bit longer than the regular LP-E6 batteries. It has the NH which, if I remember correctly, was designed more for Canon's R-series mirrorless cameras. You can use them with other devices that use the regular LP-E6. They just have a little more runtime and lifespan because they are designed for higher performance requirements. Overall it's a great kit. No swelling, poor charge or lifespan issues; they are solid batteries. I wouldn't test with the BMPCC 4K and 6K as these cameras can be a bit funny which batteries you put in them. They are excellent for photography and use with Canon devices.

easy to keep in car to recharge battery on the go, and comes with 2 spare batteries, so whats not to like!

Best non Nikon batteries I've bought in the last 5-7 years. More expensive than others but charge lasts far longer than the selection of cheaper ones I've previously bought.

Batteries charge easily and work just as expected, great price too.

Using K&F Concept, it was easy to find the right product for my Nikon. The product offered is a cut above the competition – especially the capacity of the battery. Combined with a speedy delivery, I do not believe it can be beaten!

I got these as backup batteries for when I travel in rather remote areas of south America, these are very good, almost as good as the original. They charge up in the same time and hold their charge well, very good purchase.