JBL Battery 400 4 Cell Battery for PartyBox Stage 320 and Xtreme4

The JBL Battery 400 is perfect for those who enjoy long listening sessions, whether you're hosting an event or relaxing outdoors. Designed for the JBL PartyBox Stage 320, this rechargeable battery gives you up to 18 hours of playtime on a single charge. When your speaker’s power runs low, simply swap in this spare to keep the party alive without waiting for a recharge.

Fast-charging support means you’ll be ready to go again in no time. It also doubles as a replacement for the JBL Xtreme 4’s internal battery, giving new life to your speaker when needed. And with the JBL app, you can keep an eye on your battery levels in real time—so you’re always in control of your sound.