HCP 401-LI: Replacement battery for Siemens, ME45 - S45 - S45i, Li-Ion, 900 at reichelt elektronik
Siemens SL45 front rear cover midlde back battery SILVER used disassembly | eBay
SIEMENS SL45 USER MANUAL Pdf Download | ManualsLib
Cameron Sino Battery for Siemens 3618, 6618, M45, ME45, S45, S45i PN: Siemens L36880-N4501-A100, V30145-K1310-X185, V30148-K1310-X183 : Amazon.com.be: Electronics
Even though the 5510 was revolutionary, it technically wasn't the first phone with an MP3 player. The Siemens SL45 introduced this feature almost 4 months before, in August 2001! : r/vintagemobilephones