There Huawei HB5N1H and compatible batteries are working.
This model is a bit shorter and less wide but thicker than the original battery but it works just fine, if you fix it with a spacer.
Batteries that are used and reported to be working are the ones from
Huawei
vhbw
Accu-King
Jubatec
(this list must not be complete of course; they are just the one’s I remember).