Power up your JBL Flip 3 Special Edition or T402 speaker with this high-capacity 3000mAh rechargeable polymer battery. This replacement battery operates at 3.7V and is specifically designed to be compatible with these popular JBL speaker models. The lithium polymer technology ensures reliable power delivery for extended listening sessions. Whether you're enjoying music at home or taking your speaker outdoors, this battery provides the energy needed to keep your tunes playing. Installation is straightforward, allowing you to restore your speaker's mobile functionality. This battery represents an excellent solution for extending the life of your JBL speaker when the original battery's performance has diminished.