Bring your JBL PartyBox Encore Essential speaker back to full power with this high-capacity replacement rechargeable battery, designed to deliver dependable performance and extended playtime.

Crafted with premium lithium-ion cells and integrated safety circuitry, this battery ensures stable voltage output, reliable recharge cycles, and long service life. Whether your original battery no longer holds a charge, drains too quickly, or has aged over time, this replacement is a cost-effective solution to restore your portable party speaker’s battery life — letting you enjoy music anywhere for longer