Synergy Digital Speaker Battery, Compatible with Altec Lansing INR18650-3S1P Speaker Battery (Li-ion, 3.7V, 7800mAh)
Specifications:
Compatible with Altec Lansing Speaker(s): iMW678, iMW678-BLK, iMW678-BLU, IMW789, IMW789-BLG, INR18650-3S1P, Lifejacket, LifeJacket XL, LifeJacket XL Rugged, Omni Jacket