I was looking for a replacement battery for my Sony Alpha and the K&F Concept NP-FZ100 turned out to be a great choice.

Pros: Perfect

compatibility: The battery works perfectly with my Sony Alpha camera, as if it were an original battery.
High capacity: The 2280mAh capacity is the same as that of the original battery, ensuring a long lifespan.
Type-C direct charging: The battery can be recharged directly via the USB-C port, eliminating the need for a separate charger.
Charge indicator: An integrated LED indicates the battery charge level.
Competitive price: The price is much lower than the original Sony battery.
Cons: Slightly shorter

lifespan: Like all third-party batteries, the lifespan may be slightly shorter than the original battery.
Lack of some EXIF data: The battery may not transmit some EXIF data, such as the date and time of shooting, to the camera.
Bottom line:

The K&F Concept NP-FZ100 is a great replacement battery for Sony Alpha cameras. It offers high capacity, convenient charging and a competitive price. If you don't need all the advanced features of the original battery, this is an excellent alternative.