This NP-FZ100 battery charger from K&F CONCEPT is a real miracle of performance. It starts with the fact that it works all over the world, regardless of the current supply. Because it charges via USB. So it can be powered by any USB power supply, from a laptop, a desktop computer, on the go via a car charger, a power bank and whatever else I have to hand. It has never let me down. The charger has two alternative connections: Micro-USB (that's the narrow, angled one) and Type-C, so no matter which cable I have to hand, you'll never be left empty-handed with this thing. But you will be left with a rather meaningless progress indicator. If a charger for AA batteries that costs just 20 euros can offer a precise display of the amps and charge level in real time, I don't see why you have to settle for a red/green light for the batteries. For the price, it should be OK. The manufacturer promises every conceivable protection - but no protection against moisture, which I actually find a useful feature (but probably not for the low price). The charger can charge either one or two batteries at the same time. My version (NP-FZ100 camera battery charger) comes with two powerful batteries (81.99 EUR). I use these camera batteries with my Sony Alpha 7 III (A7RIII). They also work with the Sony A9, A7III, A7RIV, Alpha 9S, A9S, Sony A7R3 and Sony A7R4 digital cameras. This offers a certain degree of investment security. If you change your Sony camera and choose a compatible model, you can continue to use the charger and batteries. I really like that. Since I often photograph time-critical events, every minute counts for me. Sometimes I have to slightly enhance the photos to meet the customer's workflow requirements (a certain resolution, a certain image format, conversion to an ICC profile, blurring unwanted details, and the like). Often this can even be done in batch processing. I'm currently using my ASUS Zenbook Pro Duo laptop with Adobe Creative Cloud under Windows 11, because the built-in NVIDIA GeForce RTX 3060 graphics card has enough power for fast batch image editing - even under extreme time pressure. And with this charger, I don't even need a power outlet (and certainly not a second one!); I can simply plug the charger into the ZenBook and that way I always have freshly charged camera batteries with me. You just have to get a powerful cable yourself. I received this set from Amazon as part of a product test. This has no influence on the rating. I am judging the test product as if I had paid for it out of my own pocket at the current price of just under 82 euros (81.99 euros, to be exact).