Extended Party Power

Keep the music going for longer with the official JBL Battery 400. Designed to provide additional power for your JBL PartyBox Stage 320, this replacement battery gives you the freedom to extend your listening sessions without waiting for the built-in battery to recharge.

Up to 18 Hours of Playtime

Each JBL Battery 400 provides up to 18 hours of playtime, giving you plenty of power for parties, events, and extended listening sessions. Keep a spare battery ready and enjoy up to 36 hours of total playtime by swapping batteries when the first one runs out.

Quick & Easy Battery Replacement

When your current battery is running low, simply remove it and insert the fresh JBL Battery 400 into the battery slot on the back of your compatible speaker. The straightforward replacement design lets you get back to enjoying your music with minimal interruption.

Official JBL Replacement Battery

Enjoy peace of mind with a genuine JBL replacement battery designed for compatible JBL speakers. It’s an ideal choice for maintaining reliable performance and extending the useful life of your speaker’s rechargeable power system.

Compatible with JBL PartyBox Stage 320 & Xtreme 4

JBL Battery Stage 320 The JBL Battery 400 is designed to work with the JBL PartyBox Stage 320 and can also replace the rechargeable battery inside a JBL Xtreme 4 when its original battery begins to degrade..

Features: 

1. Each battery has enough power for up to 18 hours of playtime
2. which means you could keep the party going for up to 36 hours
3. Keep the party going twice as long by having a spare JBL Battery 400
4. Just insert it into the battery slot in the back of your JBL PartyBox Stage 320
5. It also can replace the rechargeable battery inside a JBL Xtreme 4 wireless Bluetooth
6. Double the great times, and enjoy the peace of mind that comes with an official JBL battery