Amazon.com: Replacement Battery for LOGITECH 984-000304, UE Boombox : Health & Household
Synergy Digital Speaker Battery, Works with Logitech UE Boombox Speaker, (Li-Ion, 3.7V, 3400 mAh) Ultra High Capacity, Compatible with Logitech 533-000096 Battery - Walmart.com
Amazon.com: Replacement Battery for LOGITECH 984-000304, UE Boombox : Health & Household