I have been using K&F batteries for professional photos and videos for about a year, with great satisfaction and peace of mind This 2600 mAh model exceeds those of the same brand in durability and reliability at a reasonable price
11/12/2025
I ordered these batteries to use with my A7C during my vacation without a simple possibility of recharging them, I brought both and finally never exhausted the first in 1 week of vacation
10/12/2025
So far, they are in no way inferior to the original. Absolutely fabulous for the price.
08/12/2025
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.
05/12/2025
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.
03/12/2025
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.
Edit. 12.12.2024 Installed FW 4.00 on Sony a7IV and they still works without any issue
Edit. 12.12.2024 Installed FW 4.00 on Sony a7IV and they still works without any issue
02/12/2025
I cannot speak on durability, longevity or performance even. What I can confirm is that it works very well in a Sony A7IV running firmware 3.01 with no battery warning.
K&F do have a relatively decent reputation, so I took punt on these. the plan was to confirm it was fully compatible with the Sony camera, in my case the A7IV and to return it withing return window if not. I am glad to say these are keepers for now.
K&F do have a relatively decent reputation, so I took punt on these. the plan was to confirm it was fully compatible with the Sony camera, in my case the A7IV and to return it withing return window if not. I am glad to say these are keepers for now.
30/11/2025
This battery is great, it is better than I expected. We all know that recent SONY firmware updates disable the battery percentage display of most 3rd party batteries, and introduce the annoying pop-up warning windows saying "unsupported battery, danger, blablabla". However, this battery is fully compatible with my SONY A7 IV, firmware version 3.01. I also checked the capacity of the battery, however, it is not 2600mAh as advertised, but very close, 2421 mAh. Highly recommended!
10/06/2024