Amazon.com: Replacement Battery for LOGITECH S-00147, UE MegaBoom : Electronics
3400mAh 533-000116 High Capacity Battery for Logitech UE MegaBoom S-00147 - Walmart.com
UE Megaboom 3 Review | Tom's Guide
Amazon.com: Replacement Battery for Logitech UE MegaBoom Compatible with S-00147 984-001362 084-000845 Ultimate Ears Megaboom 3 Megaboom 3 S-00171 fits Part No Logitech 533-000116, 533-000138,7.4V Li-ion : Electronics
533-000104, 533-000138, F12431581 High Capacity Battery for Logitech UE MegaBoom 2, UE Ultimate, Kora Boom, S-00122, S00151, 3400mAh - sold by smavco - Walmart.com