Keep the party going twice as long by having a spare JBL Battery 400 on hand. Just insert it into the battery slot in the back of your JBL PartyBox Stage 320 when the first one loses its charge. Each battery has enough power for up to 18 hours of playtime, which means you could keep the party going for up to 36 hours.

Give yourself the peace of mind that comes from a trustworthy, reliable JBL Battery 400 that’s guaranteed to work with your speaker.

10 minutes fast charge will give your JBL PartyBox Stage 320 and Xtreme 4 an extra 2 hours of playtime.

Just use your JBL PartyBox app to check the health of your JBL PartyBox Stage 320’s current battery. When the Battery State of Health (SOH) reading lets you know it’s time, replacing the battery takes just seconds.

JBL Battery 400 is only compatible with the JBL PartyBox Stage 320 and JBL Xtreme 4 wireless Bluetooth™speaker. Other speakers in the JBL PartyBox series and JBL portable series have different battery requirements.

• Model Name: FG4CELL21700G
• Battery Type: Lithium-ion battery
• Battery Capacity: 7.2V / 9444mAh, 68Wh
• Operating temperature: 0 -45 ºc
• Product Dimension (W x H x D): 93 x 25.1 x 89.5mm / 3.66” x 1.0” x 3.5”
• Net Weight: 350g / 0.77lbs
• Packaging Dimension (W x H x D): 110 x 102 x 34mm, 4.33” x 4.02” x 1.38”
• Gross Weight: 404g / 0.89lbs