Flecc,
From my experience Headway cells are as good or far superior than the majority of the batteries than most of the so called high end e bike manufacturers use. They can do a genuine 5C, so 50A for a 10Ah pack, that's not bad....
Which Cheap Chinese E bike Manufacturers use Headway Cells? From what I've seen Headway cells are popular across the whole spectrum of EVs with people who can see that they offer good value for a cell that performs to at least a mid level or better.
From what I've seen most high end e bike manufacturers are still using Li Ion cells which are cheaper per whr and have much reduced life cycle than Lifepo4, but they're lighter, so it looks good on the spec sheet. I'm sorry but I'm not convinced by this whole reliability thing that has been pushed, it BS IMO.