Sony batteries are way over-priced so I bought these based on good reviews. They work as well as originals at a fraction of the price. I had purchased a different generic battery awhile back that also worked, but every time I started up my Sony a7iii I would get a warning message about using a non Sony battery. These K&F Concept batteries do not cause that warning to pop up. I see no reason to buy Sony batteries and charger when these K&F Concept batteries and charger work as well at a fraction of the price.
25/09/2025
I bought these for a trip this winter and they have worked great. They are compatible with my Nikon 3500 and last a long time.
23/09/2025
I have an a7iii purchased used with the original 2 year old battery. I purchased this set for the batteries and compact charger. My camera is on the latest firmware and I don't get any software errors as noted with some 3rd party batteries. And the battery life is great. On par with my original Sony battery. The charger is compact and I appreciate the dual USB C/ Micro USB input. Charger works equally well for the Sony cell. Highly recommend.
12/09/2025
I have always trusted K&F Concept and even here it has not disappointed me, the only drawback it takes a while to charge the batteries, but it charges them well so far, they seem identical to the original, but with many € less excellent. alternative
06/09/2025
Works great! The batteries hold the charge well too. However be careful you will get a small error message when you turn on your case with non-original batteries. That's all! Never had a problem with this brand, quite the contrary. I recommend!
02/09/2025
I had already bought them years ago in another version for a different camera model. I wanted to try her trust again for 'the newcomer. ' What can I say, it reconfirms the excellent product I was used to previously. The kit consists of a 2-slot charger with light indicators, cable and two batteries. The duration is comparable to the originals, they do not suffer from the memory effect, the self-discharge over a long period of inactivity is there and is even lower than the originals. Obviously, in order to be 100% operational, they need a few charge-discharge cycles, as well as they can be influenced by cold temperatures. Overall, it's a great product to have with you.
01/09/2025