Hey there. I live in Canada and am in the process of building an e bike with a 5000w hub motor. I’m looking for a trusted vendor to supply a 72v 40Ah battery pack for this bike. There are many Chinese vendors on Alibaba, but I’m a bit nervous committing that kind of money without knowing what I’m going to get will be of good quality. Does anyone know of a good custom battery vendor out of Canada, US or even China?