As we all know, you can never have enough batteries, so I ordered the set from K&F CONCEPT. It comes with a dual charger and 2 NP-FZ100 batteries. The charger can be operated with a USB-C or micro-USB cable. However, only a micro-USB cable is included in the delivery. Why the manufacturer doesn't include a more modern USB-C cable instead of the micro-USB cable remains a mystery to me. Two batteries can be charged at the same time. However, the charging current is split between both batteries and the charging process takes longer than with one battery. Otherwise, the charger is very spartan. You won't find an informative LCD display for the charge level here. There is only one LED per charging slot, which lights up either green or red. There are many much more convenient chargers in the same price segment. The batteries, on the other hand, make a better impression than the charger and are on a par with the best third-party batteries in terms of capacity. The batteries are also accepted by my Sony cameras without any problems and without any error messages. The camera's battery life is quite similar to that of the original Sony batteries. Overall, the K&F CONCEPT set is worth recommending, even if I don't think the charger is very good. However, the batteries have a good capacity. I give the set a solid 4 stars.