JBL Battery 400 Replaceable Battery for PartyBox & Xtreme 4
Keep the music going all night long with the official JBL Battery 400. Designed specifically for next-generation JBL portable speakers, this premium lithium-ion polymer battery is the ultimate power solution. Whether you need to replace an old, degraded cell or want a hot-swappable backup battery to double your party runtime, the JBL Battery 400 ensures you never have to hit pause on your favorite tracks.
Keep the Party Pumped with High-Capacity Power
Don’t let a dead battery ruin the vibe. The JBL Battery 400 features a massive 7200mAh (68Wh) capacity, delivering up to 18 hours of additional playtime on a single charge. It is 100% compatible with the JBL PartyBox Stage 320 and the JBL Xtreme 4, offering an exact factory fit. Thanks to its smart, tool-free design, you can seamlessly slide the old battery out and click the new one in within a matter of seconds.
Fast Charging & Intelligent Monitoring
Got caught with low juice? No problem. This official JBL accessory supports rapid charging, giving you up to 2 hours of extra playback with just a quick 10-minute charge. Furthermore, it integrates perfectly with the JBL PartyBox app and JBL One app, allowing you to monitor your battery’s state of health (SOH) and track real-time power levels right from your smartphone.
Why Choose the Genuine JBL Battery 400?
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- Guaranteed Compatibility: Form-fitted perfectly for the JBL PartyBox Stage 320 and JBL Xtreme 4.
- Massive Lifespan: Delivers up to 18 hours of extra wireless freedom.
- Hot-Swappable Design: Replace the battery in seconds without needing any tools.
- Eco-Friendly Packaging: Shipped in FSC-certified paper packaging printed with soy ink.
- Safe & Reliable: Certified genuine JBL engineering protects your device against overcharging and overheating.
Technical Specifications:
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- Battery Type: Lithium-ion polymer
- Capacity: 7200 mAh / 68 Wh
- Voltage: 9.44V
- Dimensions: 93 x 25.1 x 89.5 mm
- Weight: 350g













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