When you purchase a Canon EOS R5, R6, R7 (etc), it comes with a Canon LP-E6NH battery. The LP-E6NH looks identical to the older LP-E6 battery and these R series cameras can use them both, according to Canon.

But there is a practical difference (aside from the higher battery capacity of the newer battery): These Canon mirrorless cameras are capable of in-camera battery charging via the camera's USB-C port - but only if the battery is LP-E6NH. (This feature is convenient when traveling, for example. No worries even if you forget to bring a battery charger. You can charge a genuine Canon LP-E6NH inside the camera by connecting to a USB-C charger capable of PD (Power Delivery) rapid charging.)

Now, in the past I purchased a few generic "LP-E6NH" batteries from Amazon. But my EOS R7 would recognized them as "LP-E6" batteries. (So no in-camera charging option with them.)

To my pleasant surprise, with these K&F batteries, my EOS R7 camera recognizes them as "LP-E6NH". (See photo.) I also confirmed that the EOS R7 camera charged this K&F battery in-camera, via the camera's USB-C port, as expected. (Unlike the case with LP-E6 batteries from other sellers.)

These K&F batteries are equipped with a USB-C port on the battery itself. So you have two options for charging these: 1) Charging them inside the camera, or 2) outside, in both cases using a commonly available USB-C charger. (No need for a battery charger specific to LP-E6/E6NH.)

As far as the battery capacity/longevity, in my past experience non-OEM batteries never last as long as the genuine factory batteries. So I expect more of the same.

Still, at about half the price of a genuine Canon battery, these non-OEM may still be a decent value, especially for everyday, non-critical uses.

I may still decide to deduct star(s) for battery capacity after I have more experience using these K&F batteries. But so far they haven't given me any issues with my Canon EOS R7 mirrorless camera, for both still and video.

So for now I would like to give this product 5 stars.