This is a good battery kit to keep as a spare for your Sony camera. Batteries charge up and work well in the camera. Battery life is on par with original batteries (so far). Nice compact charger. A nice set here.

This battery and charger kit is a solid choice for anyone with a compatible camera. I bought it for my A7iii, and I'm really impressed. Not only do they work just as well as the OEM batteries that came with the camera, but they also fit perfectly in the camera body, so you don't have to worry about a drop in performance or a loose connection.

The batteries themselves have a 2600mAh high capacity, which gives you plenty of shooting time. The best part is the dual-slot charger, which lets you power up both batteries at the same time. The whole setup is small enough to fit right in my small camera case, which is a huge plus for traveling. The LCD screen is also super handy because you can see exactly how much charge each battery has in real-time. I even noticed that the charger works just as well with my original OEM batteries, charging them at the same rate as the new ones.

Speaking of charging, I noticed that the charging speed really depends on the power adapter you use. I have a fast-charging USB-C adapter for my laptop, and it charged both batteries to full in no time. Another thing I really like is how you can charge the batteries with a regular Type-C or Micro-USB cable. That means I can use my phone charger, a car charger, or even a power bank to charge my camera batteries on the go, which is a huge plus.

Overall, this kit is definitely worth the money. Considering that a single OEM battery costs almost as much as this entire package, it's a no-brainer. If you need extra batteries for your camera, this kit is the way to go. It's fully compatible with a ton of models and gets the job done without any fuss.

The K&F Concept NP-FZ100 2600mAh Battery and Charger Set is a must have for anyone with a Sony camera that uses the NP-FZ100 Battery. I recently got the A6700 and was disappoint to find out that it didn't come with a battery charger and you could only charge it while it was in the camera. So I went looking for NP-FZ100 battery charger and for less than the price of an OEM battery, I found this K&F battery and charger set. I'm very please to say that is exactly what I wanted along with 2x extra batteries and a charging dock. This dock also can charge the battery that came with the camera. So if you shoot with Sony Cameras, I highly recommend picking up this battery and charger set.

Context: I've been shooting amateur video since I was 14. I bought my first Kodak video camera with my very first paycheck in 2000 or 2001 ish.

So yea, I've had a lot of time to try out products.

And while I wouldn't rate this one 4 stars, I wouldn't rate it 5 stars either. It's honestly right in between at about 4.3 or 4.5.

Why?

Well, the reasons it's great:
1 - charges multiple batteries at once. Super important to have back ups of step limiting equipment, batteries being the most obvious.
2 - The charge indicator helps a lot.
3 - It's usb-c. Thank You All Deities! I for one have grown sick and tired of buying cables. I have probably hundreds of them, and am definitely beginning to feel bilked unfairly. It's a dirty trick and they know it. This has USB-C, so your newest cables with probably work.

Okay, I'm getting a little jaded about the cable thing. I digress.

Anyway, I had a chance to try a similar product, and that I would rate 5 stars. Why? Two reasons: First, it was a closed case design, whereas this is a top load. Idk. The closed case just felt better, less clunky, more secure. Second, the charge indicator was an LCD screen with a lot more data on it, and just visually far more appealing.

That said, if you don't need the aesthetics, and want strictly a utility like charger, this is your go to for sure.

Get it going amigo. Charge on!

Quality of the Product:The batteries are a solid replacement option, fitting well and operating without issues. However, the charging base takes a long time to charge the batteries, which might be a downside for some users.

Functionality:
These batteries work well and hold a charge over extended use, performing comparably to OEM batteries. The dual charger is convenient for charging two batteries at once, but the charging speed is slower than other aftermarket options.

Design:
The design of the batteries and charger is decent, with a clear display showing the charging status. The higher capacity batteries provide extra power for Sony cameras, and the included ports make charging convenient.

Overall Recommendation:
For Sony camera owners looking for affordable extra power, this battery and charger set is a great value. While the slow charging speed may be a drawback for some, the reliability and performance of the batteries make them a worthwhile backup power solution. I'd give it 4 out of 5 stars.

K&F usually has good products and these are no exception. They behave with a similar capacity to the OEM Sony batteries. The charger is USB-C so its easy to charge. They will also charge inside my camera body. I think they're a good value since Sony batteries are so overpriced.

These are very nice, and higher capacity than the OEM batteries which is always nice. I have several K&F items in my bag, so I feel comfortable using batteries from them.
I got them all charged up, and the display on the charger is really nice, showing an indication of the charge. I had a shoot today and wanted to give them a test run. I shot for about an hour and a total of just under 500 photographs. Starting at 100% and ending at 72%.
One thing to note, I did not get the battery warning saying it might not function properly one either my a7rv or my fx30. I'm sure that will change with the next firmware update though.
Overall super happy with these batteries.

I'm a sucker for more batteries, and I have many K&F products already. I tend to trust them.
The batteries were in great shape upon arrival, and I charged both batteries right away with the charger.
Charged great and both batteries have been drained and recharged several times already. Everything is working perfectly.
Nothing fancy going on here, and while the batteries do not have their own charging port, as seems to be the latest thing now, it's also one more place dirt and grime can build up. I do like the convenience of included ports, I don't need to have them. I'd say half of my batteries have ports and half do not. It rarely makes a difference in the end.

It's a pretty good deal for the coin being asked. Two batteries, a charging wire and charger...all one needs to get going.

Recommended.

The batteries work in an A7RV without the usual "must press Confirm to use" warning from the camera when it detects a non-Sony battery. Two batteries plugged into a USB-C port in a multiport 200W charger went from 2 bars (assumed to mean 50%) to 4 bars (100%) in about 4 hours. So it's not as speedy cycle time as a more powerful charger would provide but is good enough. Haven't tested the extra capacity/amperage they afford.

These are great, well the whole kit.

I use a Sony A7iV and I never seem to have enough battery life left when I pick it up to use, especially for street photography.

With these extra batteries I can have them charged up and ready to go and they give me more than a full day's shooting - or extended periods of video recording.

They seem to last as long as the original and work exactly as you'd expect. Good value for money as well, compared to a Sony original.