Cameron Sino Speaker Battery For Philips Fidelio B5 B5/12 HTL9100 HTL 9300 HTL9100 E5 E6 F5 Part Number 104050-2S 2ICP11/41 - AliExpress
Amazon.com: DAUERHAFT Remote Control, Comfortable Replacement Easy to Access Soundbar Remote Control Battery Powered for B5 Xs1 B5 for 37 B5 for Fidelio for 79 Xs1 : Electronics
Amazon.com: Synergy Digital Wireless Headset Battery, Compatible with Sennheiser SDW 5015 Wireless Headset, (Li-Pol, 3.7V, 360mAh) Ultra High Capacity, Replacement for Sennheiser AHB552826TPC Battery : Electronics
CameronSino Battery for Philips Fidelio B5 B5/12 fits Philips 104050-2S 2ICP11/41/54 Speaker Battery 2500mAh/18.50Wh 7.40V Black - AliExpress
Amazon.com: VI VINTRONS Battery for Sony WF-1000XM4 Charging Case, LP702428, : Electronics