JBL Battery 400 | 4 Cell Battery | Compatible with JBL PartyBox Stage 320 & Xtreme 4 - Black

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Keep the Party Going Twice as Long with JBL Battery 400

Extend your JBL PartyBox Stage 320 playtime effortlessly with the JBL Battery 400. When your rechargeable battery runs low, a fresh battery can be swapped in seconds, giving you up to 18 hours of music per battery—double your party time with a spare. This battery can also replace the rechargeable battery inside a JBL Xtreme 4 speaker when it starts to degrade. Each battery comes in FSC-certified packaging printed with soy ink.

A Great Host Always Has a Spare Battery

Keep the music playing without interruption. Insert a fresh JBL Battery 400 into the PartyBox Stage 320’s battery slot when the first runs out, giving up to 36 hours of continuous playtime.

Guaranteed JBL Quality

Enjoy peace of mind with a reliable JBL Battery 400, specifically designed and guaranteed to work with your PartyBox Stage 320 and Xtreme 4 speaker.

Fast Charge

A 10-minute fast charge gives your PartyBox Stage 320 and Xtreme 4 an extra 2 hours of playtime, keeping the party going without pause.

Monitor Playtime in the JBL PartyBox App

Check the battery health anytime via the JBL PartyBox app. When the Battery State of Health (SOH) indicates it’s time to replace, swapping the battery takes just seconds.

Compatibility

The JBL Battery 400 is compatible only with the JBL PartyBox Stage 320 and JBL Xtreme 4 speaker. Other PartyBox models require different batteries.

General Specifications

  • Net Weight: 350 g / 0.77 lbs
  • Gross Weight: 404 g / 0.89 lbs

Dimensions

  • Product: 93 × 25.1 × 89.5 mm / 3.66" × 1.0" × 3.5"
  • Packaging: 110 × 102 × 34 mm / 4.33" × 4.02" × 1.38"

Battery Details

  • Model Name: FG4CELL21700G
  • Battery Type: Lithium-ion
  • Capacity: 7.2V / 9444 mAh / 68 Wh
  • Operating Temperature: 0–45 °C

Box Contains

  • 1 × JBL Battery 400
  • 1 × Quick Start Guide
  • 1 × Safety Instructions and Warranty Card
Shipping Information

Our online store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received before 3:00pm will be dispatched the same working day.

We offer free standard delivery on all orders (UK Mainland only). If you require your order sooner, there are several express delivery options at checkout including Next Day Delivery (order Mon-Thurs).

About Us

Founded in 2006, Total Digital Stores® are a well-established UK e-tailer offering the latest in brand name consumer electronics, gadgets and tech accessories at competitive prices. Read more

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