Idk what that would be like.
The charge is this small USB cable that has like this shell and 2 metal points on the bottom.
I did buy this https://www.amazon.com/gp/product/B01ABST70E/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1 for $5. It fits so damn perfect, and looks better than the original
Edit: I jsut checked amazon for that mi band charger, it looks identical!
Update: The mi band 2 charger also looks the same, but they say they are not compatible with the other.