Amazon.com: Battery Replacement for Speaker JBL Fit Model PartyBox 100 Part Number JBL SUN-INTE-260 2600mAh / 37.44Wh 14.4v Li-ion 106.00 x 104.50 x 26.50mm Black LIONX : Electronics
SUN-INTE-260 New Original Battery 2600mAh 14.4V For JBL PartyBox 100 Speaker | eBay