Bring your JBL Flip Essential speaker back to life with this replacement Li-ion battery, designed to restore long playtime and dependable performance. Built with quality rechargeable lithium-ion cells, this battery delivers stable power and reliable voltage output to keep your speaker performing at its best.Whether your original battery drains too quickly, fails to charge, or loses capacity over time, this high-performance replacement ensures extended music playback and improved standby performance — all at a fraction of the cost of a new speaker.