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It doesn't matter, USB C cable and then just a charging adapter that you have there. Maybe you have one from the iPad, they are strong. In the end, the Pantona charger regulates itself so that there is not too much current
I also use the new S batteries and have no problems with this charger. No problem with one or two batteries. I can only recommend the charger. Why Fuji doesn't offer a device with a USB charging option is a mystery to me. So buy this one...