Works great on my Sony a7CR with latest firmware. No error or warning messages. So far no issues with duration or charging, plus the convenience of being able to charge directly from USB-C makes it so much better than having to bring along another charger. This is what the Sony original batteries are missing.
13/09/2025
Best aftermarket batteries ive used, hold charge well. Better then smaller ones for a7rii. Cant beat price over original sonys. Definitely worth it. Fits in camera no issues. Performs as expected without warnings on screen.
12/09/2025
After testing them for a few weeks, I have to say that their lifespan is a bit shorter than the originals.
The good thing about these batteries, unlike other non-original ones, is that these don't give you the "non-original battery" message.
So for now, they're perfect for my Sony A7M4.
We'll see how they age.
The good thing about these batteries, unlike other non-original ones, is that these don't give you the "non-original battery" message.
So for now, they're perfect for my Sony A7M4.
We'll see how they age.
11/09/2025
This is unsolicited feedback, nobody asked me to write it. I wouldn't bother leaving feedback here, but I got angry at seeing "F" rating by Fakespot justifying it with "insufficient reliable reviews".
OK, this product is true innovation. Something that a seemingly unrelated Chinese company has done notably better than the companies that make original cameras and lens. It is rare but it happens. Kudos to K&F, you rock!
I am throwing away old batteries and chargers and replacing them all with these!
OK, this product is true innovation. Something that a seemingly unrelated Chinese company has done notably better than the companies that make original cameras and lens. It is rare but it happens. Kudos to K&F, you rock!
I am throwing away old batteries and chargers and replacing them all with these!
04/09/2025
One of the few 3rd party brands that doesn't trigger battery warning msg with my Sony A7R V camera (firmware Ver. 3.00).
01/09/2025
I just tested with my A7 IV firmware versions 3.0 and 4.0. No warning.
So far so good.
So far so good.
27/08/2025
After testing them for a few weeks, I have to say that their lifespan is a bit shorter than the originals.
The good thing about these batteries, unlike other non-original ones, is that these don't give you the "non-original battery" message.
So, for now, they're perfect for my Sony A7M4.
We'll see how they age.
The good thing about these batteries, unlike other non-original ones, is that these don't give you the "non-original battery" message.
So, for now, they're perfect for my Sony A7M4.
We'll see how they age.
21/08/2025