A good, reliable battery backup is a godsend and that's all it is. It recharges via USB-C which everyone has these days so really easy to recharge, it has a large capacity and above all it works! It fits the camera perfectly without errors, it's easy to recharge and it has a good capacity so no complaints
03/07/2025
This battery has been reliable throughout all the testing I have put this through. This battery does initiate a warning in my newer Sony cameras. I choose to continue using the battery and I have not had any further issues while using it.
The battery looks great and stands out from the traditional black battery. It is an amazing value as it is just a fraction of the OEM Sony battery.
The battery looks great and stands out from the traditional black battery. It is an amazing value as it is just a fraction of the OEM Sony battery.
30/06/2025
At the end of the day, they’re batteries. They work to power my A7S III. I’m fond of the USB-C port because the last thing I want to bring with me when travelling is a separate battery charger.
30/06/2025
Maybe because they are new but the batteries are lasting long, the USB C makes it so much easy to charge on the go. I carry 3 of these with me to shoots and they last roughly an hour each on my Sony FX3
16/06/2025
NP-FZ100 Batteries.
I can confirm these work well with Sony A7S III and A7C II cameras, absolutely no compatibility issues and the capacity matches the original OEM ones. Having shelled out almost £400 on six original Sony batteries (which are faultless by the way, just expensive) I thought I'd give these K&F ones a try, just to have a few backup batteries in my bag - and I'm happy to report they work very well...in fact I bought 4 of them. I took advantage of the special offer and got them for less than half the price of Sony ones, which makes it even better.
I initially thought the USB-C charging port was a but gimmicky but I have to admit when all your charger slots are occupied, being able to plug directly into a power bank or a V-Lock with USB port is pretty handy.
I will still go to my OEM Sony batteries first as they have proven reliability but these K&F batts are good enough to keep along side them on long shoot days.
I can confirm these work well with Sony A7S III and A7C II cameras, absolutely no compatibility issues and the capacity matches the original OEM ones. Having shelled out almost £400 on six original Sony batteries (which are faultless by the way, just expensive) I thought I'd give these K&F ones a try, just to have a few backup batteries in my bag - and I'm happy to report they work very well...in fact I bought 4 of them. I took advantage of the special offer and got them for less than half the price of Sony ones, which makes it even better.
I initially thought the USB-C charging port was a but gimmicky but I have to admit when all your charger slots are occupied, being able to plug directly into a power bank or a V-Lock with USB port is pretty handy.
I will still go to my OEM Sony batteries first as they have proven reliability but these K&F batts are good enough to keep along side them on long shoot days.
12/06/2025
I'm surprised how long they last, noticeable longer than other brands and a bit longer than original Sony, works with FW 3.01 on a74 without any issue...so kudos to them
11/06/2025
Great for my Sony FX30 and the fact that I'm getting two quality batteries at this price is amazing. So far I've had no weird hiccups or issues. No overheating or burning smells. Turning the camera on and off doesn't come with any glitches and navigating the menu is simple. These may sound off, but when you use different batteries that aren't from the manufacturer, sometimes you can get some unsettling results through regular use - like at one point my Wasabi batteries overheating my Pocket 6K. So it's important to look for any operation anomalies as you use different batteries. These are great and I definitely recommend.
05/06/2025
Third party batteries usually over promise and under deliver by using bad cells or similar.
This kit has 2 batteries that claim 2600mAH compared to the stock 2280 mAH. I am not going to do a torture test or say which lasts longer. I will say however, I was not left wanting more life or felt like the K&F was cheating me by misrepresenting. This could even mean this battery is actually just 2280 and I would never know but it does last at least the same amount of time.
The added benefit of having the internal charging functionality is nice and a welcome addition but a few notes about it. The little orange trays that come with these batteries is a nice to have but it blocks the charging port. The charger being internal to the battery is a concern as it simply adds more components and more heat to an already tight package.
I would still buy this kit over the $80 Sony wants for ONE battery and no charger regardless of any concerns I have about longevity.
This kit has 2 batteries that claim 2600mAH compared to the stock 2280 mAH. I am not going to do a torture test or say which lasts longer. I will say however, I was not left wanting more life or felt like the K&F was cheating me by misrepresenting. This could even mean this battery is actually just 2280 and I would never know but it does last at least the same amount of time.
The added benefit of having the internal charging functionality is nice and a welcome addition but a few notes about it. The little orange trays that come with these batteries is a nice to have but it blocks the charging port. The charger being internal to the battery is a concern as it simply adds more components and more heat to an already tight package.
I would still buy this kit over the $80 Sony wants for ONE battery and no charger regardless of any concerns I have about longevity.
01/06/2025