JBL EONONECOMP-BATT - Spare Battery Module for EON ONE CompactPlay more sets, teach more classes and keep the party going all night long when you extend the performance time of your EON ONE Compact system with extra batteries. Use the JBL EON ONE Compact Dual Battery Charger (sold separately) to quickly charge one or two EON ONE Compact lithium ion rechargeable batteries; full charge is complete in just 3. 5 hours for one battery and 7 hours when charging two batteries. LEDs indicate charging status. Battery