Product review: K&F CONCEPT NP-FZ100 camera battery charger with USB dual slot, 2-pack 2080mAh replacement battery set, compatible for Sony A9 A7III A7RIII A7RIV, Alpha 9S, A9S, Sony A7R3, Sony A7R4 digital cameras Dimensions: 16.7 x 10.9 x 2.9 cm Weight: 0.27 kilograms Two batteries can be charged at the same time, and the charger can only charge one battery. The charger can be operated via a micro USB cable as well as via USB C and can therefore be connected to a cell phone or laptop as well as to a car charger or even a power bank. The included batteries are characterized by the fact that they are easily recognized by the original charger, which means that they support the original charger chipset. Deficiencies: In fact, the actual value that the camera reads is not the actual charge percentage of the battery. This means that the battery is fully charged via the included charger, then the green light appears. After that, insert it into the camera and you will get a charge percentage of about 85%. If you use the original charger, the battery will be recognized, and after charging, fully charge the battery and install it in the camera. We note that the camera reads the battery charge percentage of 93%. However, if we compare the quality with the price, we see that this defect is not significant. I give this product 4 stars from my point of view Thank you for reading my review, I hope it was helpful to you.