I have an Anker powerbank. It will no longer charge using the USB-C port. I have an older Belkin that is certainly less stylish but has a higher capacity and

I have an Anker powerbank. It will no longer charge using the USB-C port. I have an older Belkin that is certainly less stylish but has a higher capacity and still works perfectly, including charging via USB-C, so I'm not inclined to buy Anker again. Of course neither of us has a lot of first hand data so it's hard to draw meaningful conclusions.