JBL Battery 400 for PartyBox 320

Keep the Party Going

The JBL Battery 400 is the official swappable battery designed for the JBL PartyBox 320. Whether you’re hosting a backyard bash or taking the party on the road, this battery ensures your music never stops.

With up to 12 hours of playtime on a single charge, you can enjoy powerful sound all day or night. When power runs low, simply swap the battery—no cables or waiting required. This makes it perfect for outdoor events, mobile DJs, or anyone who needs non-stop performance.

The Battery 400 installs easily into the back of the PartyBox 320. It locks securely into place, so you don’t have to worry about interruptions during your set. Plus, the built-in charge level indicator lets you check your power status at a glance.

Built to JBL’s rugged standards, this battery is tough enough for travel, events, and regular use. Whether you’re indoors or outside, it delivers consistent, reliable performance.

Furthermore, it’s compact and lightweight, making it easy to carry as a backup. Keep one charged and ready to go so your music keeps playing—no matter where the party takes you.

Key Features:

• Up to 12 hours of battery life per charge

• Swappable design for instant power replacement

• Compatible with JBL PartyBox 320

• Rugged and travel-ready for outdoor use

• LED power indicator for easy charge tracking