Synergy Digital Speaker Battery, Compatible with Harman/Kardon Onyx Studio 6 Speaker, (Li-ion, 3.7V, 3500mAh) Ultra High Capacity, Replacement for Harman/Kardon ID997 Battery

This high-capacity battery is a game-changer for anyone who owns a Harman/Kardon Onyx Studio 6 speaker! With a capacity of 3500mAh, you can enjoy up to 12 hours of non-stop music playback without having to worry about running out of power.

And the best part? It's rechargeable, so you can simply plug it back in and get going again! No more hassle with disposable batteries or waiting for them to charge - this battery has got you covered.

Plus, it's designed to meet or exceed the original battery performance, so you know you're getting top-quality materials and craftsmanship.

Don't settle for anything less - upgrade to this ultra-high capacity battery today and take your music experience to the next level!