Amazon.com: Sennheiser BA 151 Rechargeable Battery for IR and RF Wireless Headsets : Electronics
Original Sennheiser Akku SDW 10 (507068) für SDW 5013 SDW 5014 SDW 5015 SDW 5016 Headset | 3,7V 335mAh
2X OSS Akku für Sennheiser RS 4200 RR 4200 RR 840 RI 410 RI 830 RI 900 is 410 HDI 830, Set 840 TV Set 840-S Set 843 Set 900 Set 830, 150mAh BA 300 BA300 Ersatzakku Batterie: Amazon.de: Elektronik & Foto
AKKU 30097: Battery for Sennheiser DW 30 HS Li-Po, 400 mAh at reichelt elektronik