I purchased a Winora Yucatan e-bike while stationed in Germany (2019). The bike came with a 220v battery charger. I've returned to the United States and (of course), the 220v battery charger won't work. I've tried using a converter plug thinking that the bike would just charge slower however, it didn't work. Any suggestions for a good 110v charger to replace the 220v model? I've included a picture of the pin configuration ... unsure what type of pin that is (3 pin?) Thoughts?