I notice many lower cost ebikes are using more basic Chinese cells and people are reviewing such bikes quite positively. Are there now recognised Chinese brands that do a decent basic cell? If not 18650 perhaps 21700? We aren't talking high end performance here just a good quality reliable cell with perhaps mid-level performance that allows for cheaper battery packs. When I bought my original 48V battery pack which was in a Hailong case it came with Samsung 2500mAh cells that were good quality and safe just not class leading performance. I'm seeing such battery packs now without the brand of cell being mentioned and again people seem happy with them. Are 21700 cells typically better or less likely to be fake than 18650?