Power through every playlist with the JBL Battery 400. Designed for the PartyBox Stage 320 and Xtreme 4, this swappable battery lets you double your playtime in seconds — no downtime, just nonstop music.
✅ Quick-Swap Design: Replace your battery in seconds ✅ Extended Playtime: Party twice as long without recharging ✅ Compatible with PartyBox Stage 320 & Xtreme 4 ✅ Reliable JBL Quality: Built for performance and durability ✅ Perfect for Events: Ideal for long sessions, gigs, and road trips
