I got this to use with my Sony Nex 6 camera. I plugged the charger into a USB and put in the included batteries. A few hours later the indicator lights went from red to green and I put one of the newly charged batteries in the camera. The camera worked fine through my test shots. I have just now also put one of my original Sony batteries in the charger (it had run down to zero charge) and it is in the process of charging now. Aside from the fact that this little unit works is the fact that it's light in weight--so light that if I need to take it along it will feel virtually weightless in my camera bag. I think this is a pretty good charger and battery set.

When charging a single battery it pulled 5.14v at 1.38a. I slipped the included battery into my A7R2 and it fired right up with no anomalies. The option to charge the batteries external over USB is just too useful.

K&F Concept should be familiar to most people by now, they have steadily expanded their portfolio of products and even if I wasn't aware of it, there are also replacement batteries in the range.

The NP-FZ100 set tested here comes with a USB charging cradle and can charge two batteries at the same time. Of course, it also charges the original battery
Where K&F found the outdated micro-USB connections and cables is a mystery to me.

The batteries are almost identical to the original and have 2280mAh. They feel a little shorter than the original, but this could even out after a few charging cycles.

Except for the somewhat long loading time, a really good replacement set and a recommendable alternative to the original from Sony, which is twice as expensive

The two "NP-FW50" batteries that are 3/4 charged also fit in a Sony A-6400 camera and work reliably without any problems. An enclosed micro-USB cable is firmly plugged into the small charger, another USB-C connection without the supplied cable can also be used.

Especially in cold temperatures or when travelling, you are on the safe side with additional batteries that you can take with you on the go, and I think that both batteries are also safe and last a long time. There were no instructions included, but there is a "CE" mark on the batteries, the charger and the packaging.

Same performance as the OEM Sony battery that came with a ZVE 10, but at a lower price.

The charger did not overheat. Works as expected. Seems safe. I tried these in my Sony Nex-5 and they seem fine. I generally use generic batteries and don't think twice about it. I am not really equipped to do more in-depth testing of the battery's life nor do I have the facilities to submit the batteries to tests like pouring flaming diesel oil onto them to see if they catch fire, but all that being said they work great.

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 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.

The K&F Concept NP-FW50 Battery and Charger Set for my Sony ZV-E10 has been fantastic! The batteries hold a good charge, comparable to the original Sony ones, and the dual charger is super convenient, allowing me to charge both batteries at once. This set has really improved my workflow during long shoots, and the charging times are quick. Overall, it's a great value and reliable alternative to more expensive options. Highly recommend for ZV-E10 users!

Although I'm only on my 5th charge cycle these batteries seems to be holding up and giving some good run times. I'm using both batteries in a battery grip so it seems like I'm getting some extra long shooting sessions. As long as they hold up in the the next 6 months or so I'll buy more.