Bought these to use on an extended trip. Really liked the USBC port and indicator light on the battery for easy charging outside the camera without needing a charger base. Over four months only had to change the battery once while in the field after some heavy usage. Otherwise, each evening I would replace the day's battery with one freshly charged the night before. As to longevity, I won't know for quite a while but so far so good.
26/10/2024
These are very convenient to travel with if you have a Sony mirrorless camera that uses their first generation Li-Ion battery. They are always needed as spares since one battery can't last all day and will only provide 300 shots. We Sony shooters know this shortcoming well. But with this design, they eliminated the need for the bulky external battery charger. It's been miniaturized into the body of the pack. Just plug in a USB-C plug into it and provide it a 5V source and it's charging. A red LED shows it's charging and it turns green when fully charged. The kit comes with the USB-A to USB-c charge cable. The battery fits my Sony a6000 and A7II perfectly. They have the same capacity as stock batteries. And you can still recharge them in a traditional charger as well. Very convenient indeed!
Nice job, K&F Concepts!
Nice job, K&F Concepts!
25/10/2024
Works fine in my sony a6500. Charges pretty fast with usb c.
I charged it with my usb power meter and it took 7.6wh to charge and given a 95% charge efficiency that puts it around 7.2wh of capacity. Slightly lower than what's stated. But not low enough to remove a star imo.
I charged it with my usb power meter and it took 7.6wh to charge and given a 95% charge efficiency that puts it around 7.2wh of capacity. Slightly lower than what's stated. But not low enough to remove a star imo.
19/10/2024
Great replacement for the original. This battery does not require a charger, it has its own usb port. Less items to carry. Very convenient.
Battery life is great. Can’t beat the price.
Battery life is great. Can’t beat the price.
19/10/2024
I used this battery for the first time in my camera for the eclipse. It charged quickly and worked great. I love the fact that you can charge it in a traditional charging base or simply by connecting a usb-c cable to it. You can never go wrong with K&F products.
14/10/2024
The K&F Concept FW50 Battery comes with a charging cable. The battery works well with my Sony A7s. It holds slightly less charge than most FW50s, with only 1100mAh versus 1500mAh. The convenience of charging it from a USB cable is worth the 30% difference. The battery charged about the same duration as when I charged in a cradle. It is an excellent alternative for travel because it means carrying one extra item.
13/10/2024
I've been using the K&F Concept NP-FW50 batteries with my Sony RX10 IV, and I'm totally satisfied. They slot in and work just like the original batteries, no issues whatsoever. What I really appreciate is the build quality; they feel sturdy and reliable, which is exactly what I need for long shooting days.
The USB C charging feature is a massive plus for me. It's so much more convenient to plug them directly into a USB port to charge, instead of having to carry around a separate charger. It simplifies my setup and makes it easier to ensure all my batteries are charged and ready to go, no matter where I am.
The USB C charging feature is a massive plus for me. It's so much more convenient to plug them directly into a USB port to charge, instead of having to carry around a separate charger. It simplifies my setup and makes it easier to ensure all my batteries are charged and ready to go, no matter where I am.
07/10/2024
Compared to the original battery, these have a slightly shorter running time, but this is compensated for by the option of being able to charge them directly from a power bank while on the go without a separate charger.
The price is also OK, so I recommend buying it
The price is also OK, so I recommend buying it
01/10/2024
I have several of these batteries. The only negative is that the camera manufacturer has programmed the camera to provide an initial warning, when the battery is switched on, after replacement. The manufacturer shouldn’t bother and just sell its branded battery at a fair price. Consumers get sick of price gouging and purchase accordingly.
26/09/2024