Kit arrived on time, working, convenient in use. thanks

Bought these batteries for a Nikon Coolpix 1000 to replace original batteries, the difference is remarkable 100% improvement on longevity of charge and for the price compared with Nikon original they're a no brainer, definitely recommend

The batteries work like the OEM batteries in the H2s and X-T4. They can be charged in the cameras, which is great. The charger has a USB-C connector. The combination of these two features guarantees that you can charge these batteries wherever you can charge your phone. Great for travel. From a usability point of view, I don't feel the differences between these and the OEM devices. They work great in my Fuji cameras.

Excellent package of batteries and charger for my Canon R5. Works without any fuss and as it’s USB I can charge it from the car or Campervan.

A very lightweight charger that fits in any space in the backpack and charges two batteries on the fly.
I haven't compared charging times with those obtained with the original Canon chargers that I own, but if it's longer, I don't think that's a major obstacle to the needs and demands of a large number of photographers who usually leave our batteries to charge before going to bed.
I haven't had any charging problems with any of the batteries I use, both original Canon and second-brand batteries.
A product to make you satisfied with the purchase made.

High quality - compact - expensive - modern - 2250mAh - nice design - Sony battery charger set

The K&F Concept battery charger set for Sony comes in a medium-sized plastic box and is well packed. The delivery includes a charger, two batteries, a micro USB charging cable and no instructions. The battery charging set is very high quality and well made. Each battery has a storage capacity of 2250mAh. It takes 4.5 hours to fully charge the 2 batteries. If the battery is empty, it can be charged via the charger with the supplied micro USB charging cable. Unfortunately, no power supply was given here. Optionally, you can also connect to the computer or laptop for charging. It also has a USB-C input, with which you can also use USB-C charging cables. I'm happy with it.

Scope of delivery:
➡️1x charger
➡️2x batteries
➡️1x Micro USB charging cable

Pro:

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 compared to the old batteries I own. It's really fun to take several hundred photos (fast series 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.

I bought it to have two more spare batteries, so they already work like the original in my Canon R, I can charge the original battery in this charger and vice versa. Everything OK.

K&F supplies a complete set for Canon.

In my case for the EOS R.

Compact and comprehensive, the set comes in solid packaging.

The battery, charger and cable make a high-quality impression.

Charging time is close to the original, you need a little longer, but it is due to the capacity.

The batteries are recognized without any problems and the camera works as it should.

Can recommend this set.

I've done a little comparison of some different batteries and the R5. Not scientific at all but some stats for battery life etc as I use the camera. The camera seems happy with the K&F Concept batteries and does not give an error about non-genuine batteries (unlike my 5DsR).
Right a bit of background of how the R5 uses a battery and its frame rate. If you set the camera to high speed continuous+ (green H+ icon) it has 3 modes - A, B and C which are dependant on how much charge is in the battery. Mode A (green H+) can achieve up to 12fps, mode B (white H+) can achieve up to 9.2fps and mode C (blinking white H+) can achieve 6.8 fps.
As a battery runs down the frame rate will move to the next lowest mode at certain percentages of battery power that's left. This is where I've tried to find out at what point different batteries change mode.
Now the numbers.

Canon LP-E6N battery (2+ years old) - Mode A works till the battery is at 46% (282 shots), Mode B then continues down to at least 5% (total 431 shots) I then had to change battery. Never reached Mode C.

Canon LP-E6NH (1 month old) - Mode A works till the battery is at 38% (399 shots), Mode B then continues down to at least 5% (total 462 shots) I then had to change the battery. Never reached Mode C.

K&F Concept LP-E6NH (2 weeks old) - Mode A works till the battery is at 75% (150 shots), Mode B then continues down to at least 5% (total 420 shots) I then had to change the battery. Never reached Mode C.

Obviously the genuine Canon NH battery is best but most expensive. The K&F Concept has less overall shots than old Canon N batteries but not by much and this test was all just based on one use of each battery. They may even out a bit more when averaged.

Anyway, if you need 12fps for the longest time then you have to get the genuine Canon NH battery. If 12fps for the first quarter and then 9fps for the rest of the battery is good enough then the K&F Concept batteries are awesome value for money. Personally I don't have a problem with the slightly reduced fps compared to spending £150 on a single Canon battery.
Of course if you go on to electronic shutter then you get 20fps at any battery percentage.
Hope that helps.