I've been a photographer for over 10 years and have used almost every manufacturer on the market. And as is my custom, I use the original battery for the respective system once and otherwise only third-party batteries. This time, however, is the first time I've used batteries from K&F Concept and yes, what can I say? The batteries are great! I can easily get through the entire day with my Sony A7 IV and both batteries (about 8 hours straight) and still have some charge left. In my opinion, these batteries are in no way inferior to the original from Sony and I can definitely recommend them. I particularly like the fact that you can charge both batteries at the same time, which is often not the case with other third-party manufacturers.
15/03/2026
High quality - compact - expensive - modern - 2250mAh - beautiful design - Sony battery charging set
High quality - compact - expensive - modern - 2250mAh - nice design - Sony battery charger set
The K&F Concept battery charger set for Sony comes in a medium-sized plastic box and is well packed. The delivery includes a charger, two batteries, a micro USB charging cable and no instructions. The battery charging set is very high quality and well made. Each battery has a storage capacity of 2250mAh. It takes 4.5 hours to fully charge the 2 batteries. If the battery is empty, it can be charged via the charger with the supplied micro USB charging cable. Unfortunately, no power supply was given here. Optionally, you can also connect to the computer or laptop for charging. It also has a USB-C input, with which you can also use USB-C charging cables. I'm happy with it.
Scope of delivery:
➡️1x charger
➡️2x batteries
➡️1x Micro USB charging cable
Pro:
The K&F Concept battery charger set for Sony comes in a medium-sized plastic box and is well packed. The delivery includes a charger, two batteries, a micro USB charging cable and no instructions. The battery charging set is very high quality and well made. Each battery has a storage capacity of 2250mAh. It takes 4.5 hours to fully charge the 2 batteries. If the battery is empty, it can be charged via the charger with the supplied micro USB charging cable. Unfortunately, no power supply was given here. Optionally, you can also connect to the computer or laptop for charging. It also has a USB-C input, with which you can also use USB-C charging cables. I'm happy with it.
Scope of delivery:
➡️1x charger
➡️2x batteries
➡️1x Micro USB charging cable
Pro:
14/03/2026
I use the batteries for my Sony camera, which is getting on in years. The original batteries do not last as long and the original charger can only charge one battery.
The set here makes a good impression of workmanship. The batteries snap into the charger with a rich "click" and are charged. However, it is not the fastest charger. With a maximum of 9W via USB-C, charging takes a while. But, for this, two batteries are charged at the same time. You are very spoiled with fast chargers from today's world, but the manufacturer's specifications come close to 5V/2.1A. That is max. 10W
The batteries themselves fit well into the device and have a great capacity, especially compared to the old batteries I own. It's really fun to take several hundred photos (fast series of sports events) with one battery.
The charger itself is very small and very flexible thanks to Micro USB and USB-C. I think that's really great!
I am very satisfied with it, especially with the price/performance ratio you can be really very satisfied.
The set here makes a good impression of workmanship. The batteries snap into the charger with a rich "click" and are charged. However, it is not the fastest charger. With a maximum of 9W via USB-C, charging takes a while. But, for this, two batteries are charged at the same time. You are very spoiled with fast chargers from today's world, but the manufacturer's specifications come close to 5V/2.1A. That is max. 10W
The batteries themselves fit well into the device and have a great capacity, especially compared to the old batteries I own. It's really fun to take several hundred photos (fast series of sports events) with one battery.
The charger itself is very small and very flexible thanks to Micro USB and USB-C. I think that's really great!
I am very satisfied with it, especially with the price/performance ratio you can be really very satisfied.
14/03/2026
13/03/2026
K&F supplies a complete set for Canon.
In my case for the EOS R.
Compact and comprehensive, the set comes in solid packaging.
The battery, charger and cable make a high-quality impression.
Charging time is close to the original, you need a little longer, but it is due to the capacity.
The batteries are recognized without any problems and the camera works as it should.
Can recommend this set.
In my case for the EOS R.
Compact and comprehensive, the set comes in solid packaging.
The battery, charger and cable make a high-quality impression.
Charging time is close to the original, you need a little longer, but it is due to the capacity.
The batteries are recognized without any problems and the camera works as it should.
Can recommend this set.
07/03/2026
I bought the batteries because the one battery that Sony provides is simply not enough for me. When filming at very high quality, the battery drains pretty quickly at 4K50. And with these replacement batteries, I can now film in peace without worrying. Charging is also pretty fast with this device.
06/03/2026
On the plus side, the batteries were accepted by my Sony A7iii without any error messages. The external charger is a real plus. I'm very satisfied with these batteries.
03/03/2026
K&F Concept should be familiar to most people by now, they have steadily expanded their portfolio of products and even if I wasn't aware of it, there are also replacement batteries in the range.
The NP-FZ100 set tested here comes with a USB charging cradle and can charge two batteries at the same time. Of course, it also charges the original battery
Where K&F found the outdated micro-USB connections and cables is a mystery to me.
The batteries are almost identical to the original and have 2280mAh. They feel a little shorter than the original, but this could even out after a few charging cycles.
Except for the somewhat long loading time, a really good replacement set and a recommendable alternative to the original from Sony, which is twice as expensive
The NP-FZ100 set tested here comes with a USB charging cradle and can charge two batteries at the same time. Of course, it also charges the original battery
Where K&F found the outdated micro-USB connections and cables is a mystery to me.
The batteries are almost identical to the original and have 2280mAh. They feel a little shorter than the original, but this could even out after a few charging cycles.
Except for the somewhat long loading time, a really good replacement set and a recommendable alternative to the original from Sony, which is twice as expensive
02/03/2026
The two "NP-FW50" batteries that are 3/4 charged also fit in a Sony A-6400 camera and work reliably without any problems. An enclosed micro-USB cable is firmly plugged into the small charger, another USB-C connection without the supplied cable can also be used.
Especially in cold temperatures or when travelling, you are on the safe side with additional batteries that you can take with you on the go, and I think that both batteries are also safe and last a long time. There were no instructions included, but there is a "CE" mark on the batteries, the charger and the packaging.
Especially in cold temperatures or when travelling, you are on the safe side with additional batteries that you can take with you on the go, and I think that both batteries are also safe and last a long time. There were no instructions included, but there is a "CE" mark on the batteries, the charger and the packaging.
28/02/2026