Revitalise your JBL Pulse4 speaker with this high-capacity 7260mAh lithium polymer replacement battery. Specifically designed for the IY1091 speaker model, this battery delivers reliable power to keep your music playing longer. The advanced lithium polymer pouch technology ensures consistent performance while maintaining the compact form factor of your speaker. This replacement battery is an ideal solution when your original battery shows signs of degradation or reduced runtime. Installation-ready and engineered to match the original specifications, this battery helps restore your speaker's operational duration. Experience the same immersive sound quality you love, now powered by a fresh battery that's built to last. Perfect for audio enthusiasts who want to extend the life of their beloved JBL Pulse4 speaker.