More convenient than original Sony battery with the USB C socket for charging without the Sony charger. Capacity is about 80% to 93% of Sony battery for what I roughly "no-lab-measurement" estimated after using for few weeks, with the price of less than half, it might be the best value. Not sure about long term reliability for this one, my old Sony battery has lasted 3 years and is still excellent.
03/05/2026
I have a sony a7iv and a sony FX30 and both of them in the latest version, i have ZERO issues with these batteries and every time i meet someone with a sony camera i always recommend these batteries, they're great in price so you actually get way more for your money!
when i need to charge them it makes it super easy that i could use a USB C charger to charge them in a couple of minutes, they last so much longer than the sony OEM batteries!
EDIT 11/09/25: Still Five stars, still my favorite batteries for my cameras, I have 3 original Sony batteries and these two K&F batteries but ill still reach over to get these
when i need to charge them it makes it super easy that i could use a USB C charger to charge them in a couple of minutes, they last so much longer than the sony OEM batteries!
EDIT 11/09/25: Still Five stars, still my favorite batteries for my cameras, I have 3 original Sony batteries and these two K&F batteries but ill still reach over to get these
25/04/2026
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!
17/04/2026
These batteries work great! I also love the USBC charge port very convenient to charge on the go in the car. These batteries last longer than an afternoon day to night Timelapse transmission. Can’t beat the price either.
31/03/2026
26/03/2026
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.
15/03/2026
I cannot vouch for the capacity. I doubt it, but not because of evidence. Because it has to make room for a USB port so I find it hard to believe that there's more juice capacity than they stock battery that doesn't have a charging port.
That said, charging port means it charges faster than if I have to charge through my camera. It works and is read by both my a6700 and FX30. Very happy with this set of backup power.
That said, charging port means it charges faster than if I have to charge through my camera. It works and is read by both my a6700 and FX30. Very happy with this set of backup power.
08/03/2026
Great idea to have integrated the charging sockets directly into the battery! They work very well, even in a conventional charger. I will only order this type of batteries if I have to buy them one day, for this case or another. It's always one less charger to put in the bag, that's not much but better than nothing! ;)
Capacity and duration apparently normal.
Capacity and duration apparently normal.
04/03/2026
01/03/2026
And thanks to USB-C, it's also very good for traveling.
Beings were also recognized without any problems on my A7 III.
Beings were also recognized without any problems on my A7 III.
28/02/2026