JBL PARTYBOX 1000 powered by BATTERY !!! - YouTube
LOSONCOER SUN-INTE-260 4000mAh For JBL PartyBox 100 Speaker Battery
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JBL Partybox Encore Essential 5200mAh Speaker Replacement Battery: BatteryClerk.com Speaker
Amazon.com: 13400mAh High-Capacity Extended SUN-INTE-125, 2INR19/66/4 Battery Replacement Compatible with JBL PartyBox 300 High Power Portable Wireless Bluetooth Party Speaker : Electronics
Battery JBL Partybox 300
6800mAh Battery For JBL Speaker Partybox Encore Essential,P/N:GSP-1S2P-F5A,3.7V | eBay
JBL PartyBox 300 | Battery-powered portable Bluetooth party speaker with light effects