Hi! Ha ha I am not Rollei expert lah!
But knowing 3003 well enough I have battery packs using replaceable batteries rather than those with soldered battery for all my 3003/SL2000F bodies. Never get those build in solder type replaced before. Can try Sim Lim square but I am not sure the exact shop. Try asking around in clubsnap, or Fotographfix (62237217), can try asking ricohflex.
Regards