Hello I'm doing am ebike conversion on my bike but I'm totally new to this. I have 36 volt battery already installed on the frame of this bike and I ordered a 36 volt front wheel kit from eBay. I've noticed that the controller that they sent me is stamped 48 volts but I don't know if I could use this. I've not tried to connect it because I'm worried that it may be not compatible and maybe quite dangerous. I would appreciate some help and advice on this thank you.