Amazon.com: Logitech OEM Remote Control Speaker s715i : Electronics
Synergy Digital Speaker Battery, Works with Logitech S715i Speaker, (Ni-MH, 3.6V, 1500 mAh) Ultra High Capacity, Compatible with Logitech 180AAHC3TMX Battery - Walmart.com
HQRP Battery for Logitech S715i S-00100 984-000134 984-000135 984-000142 993-000459 Rechargeable Speaker plus HQRP Coaster - Newegg.com
MPF Products 2000mAh High Capacity 180AAHC3TMX, 993-000459 Battery Replacement Compatible with Logitech S315i, S715i, Z515 Portable Speaker : Electronics