🇬🇧 🇩🇪 Generic battery to replace FP1 battery (⚠️see first post for warning)

[Ingo]

Just saw there seems to be a new alternative battery for the FP1: https://www.otto.de/p/accucell-akku-passend-fuer-fairphone-1-fp1u-fp1-f1b201-3-smartphone-akku-S0Q0B0GH/#variationId=S0Q0B0GHQ549