Power up your JBL Charge 3 speaker with this high-capacity replacement battery. Featuring a robust 6000mAh capacity and 3.7V output, this Li-ion battery pack ensures your music keeps playing for hours. The GSP1029102A battery is specifically designed to seamlessly integrate with your JBL Charge 3, maintaining the same reliable performance as the original. This rechargeable battery pack offers a practical solution when your original battery's performance begins to decline. Installation is straightforward, allowing you to restore your speaker's mobility and untethered audio enjoyment. Keep your JBL Charge 3 performing at its best with this dependable power solution that matches the original specifications. Perfect for audio enthusiasts who want to extend the life of their beloved portable speaker.