I need a Battery for a Fairphone 1

[urs_lesse]

Just in case you cannot find an original one, BertG summarizes it well here:

FP1 Battery Wanted (Berlin)

Did you already find this thread: 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).