Reviews
High Quality USB C Batteries That Match OEM Voltage
These K and F Concept 2520 milliamp DMW BLK22 batteries feel high quality from the moment you open the package. They do not feel cheap at all. The built in USB C charging is a big plus since you can charge them directly with a standard charger and the included cable, without needing to carry a separate battery charger.
I tested the voltage with a meter and it matches a brand new OEM Panasonic battery I recently purchased. That is important to me because I have used lower cost third party batteries in the past that provided less voltage, which caused my camera to glitch. Because of that experience, I always check voltage on new batteries. These passed that test with no issues. I hope they hold up as well as the OEM batteries over time, but so far they look very promising.
I tested the voltage with a meter and it matches a brand new OEM Panasonic battery I recently purchased. That is important to me because I have used lower cost third party batteries in the past that provided less voltage, which caused my camera to glitch. Because of that experience, I always check voltage on new batteries. These passed that test with no issues. I hope they hold up as well as the OEM batteries over time, but so far they look very promising.
04/04/2026