Charge directly via USB-C - that's it! No charger/no charging cradle required. Good thing that!

Given me a couple of errors in the past with my a7iv freezing but they’re holding up still with the charge.

I’ve been using them for over 5 months. They last as long as the Sony original batteries and they’ve always been accepted by my camera. I have never seen any warning related to the batteries on my camera. Super happy, would buy them again!

After some time using them on a Sony A6700, we can say that they meet all expectations. It has durability and, when you are in the countryside or in the mountains, you can charge it with a power bank without problems.

The K&F NP-F100 battery offers a nominal capacity suitable for cameras that use this type of battery, providing a battery life comparable to the original. The main highlight is the incorporation of a USB-C port for direct charging, which represents a significant improvement compared to previous models that used micro-USB ports or specific external chargers.

The USB-C port allows for faster and safer charging, with support for regulated direct current (DC) charging, which optimizes recharge times. However, it is essential to use a specific charger compatible with the battery's electrical requirements — especially in terms of voltage and amperage — to avoid damage or inefficient charging. Using generic chargers or chargers with inappropriate features can affect battery life or even compromise its safety.

The physical construction of the USB-C port is robust and has a design designed to minimize wear and tear due to frequent insertions. In addition, the battery includes protection against overloads and short circuits, which contributes to its reliability.

In short, the addition of the USB-C port in the K&F NP-F100 significantly improves the charging experience, provided that a charger that meets the recommended specifications is used to ensure optimal safety and performance.

I was using the K&F Concept NP-FZ100 battery pack because, to be honest, a single battery is never enough when you're shooting or doing long video sessions. This pack includes two batteries and, best of all: they can be charged directly via USB-C. A great one if you have a powerbank on you.

Charging time is relatively short. Usb C connection is awesome.

Top batteries.
I don't know whether they will last exactly as long as the originals, as I take pictures of us films.
Direct charging via USB-C is great.
Use them for the A7III and now for the A7SIII for the A7R5.

Very good capacity. Easy to charge on the go thanks to the integrated USB-C connection.

Chargeable via USB-C, lasts a long time and are fully compatible