Amazon.com: SCESMIA Replacement Battery for Logitech UE MegaBoom Ultimate Ears MEGABOOM 3 984-001362 084-000845 S-00147 S-00171, fits Part No 533-000116, 533-000138 533-000146,7.4V Li-ion 3400mAh/25.16Wh : Electronics
Speaker Battery for LOGITECH S-00147, UE MegaBoom, 533-000116 ( 2600 mAh ) New | eBay
Amazon.com: Replacement Battery for Logitech UE MegaBoom, S-00147 Part NO LOGITECH533-000116 : Electronics
Gikysuiz Replacement Battery for Logitech UE MegaBoom Series Wireless Bluetooth Speaker fits Part Number 533-000116 533-000146 7.4V 3400mAh - Newegg.com
Logitech Megaboom Battery | Logitech Speaker Battery | Cameron Sino Battery - Digital Batteries - Aliexpress