JBL Battery 400 – Easy-to-Replace Spare Battery Compatible with JBL PartyBox Stage 320 and Xtreme 4 Portable Speakers

The JBL Battery 400 is the official swappable spare battery for the JBL PartyBox Stage 320 and JBL Xtreme 4, adding up to 18 more hours of playtime with a snap-in swap that takes seconds, available now at Totot.ae across the UAE.

Why Buy a Spare JBL Battery 400?

A swappable battery only pays off if you actually own a spare. The JBL Battery 400 turns the theoretical benefit of the PartyBox Stage 320 and Xtreme 4 into a practical one: when the charge runs out mid-party, you swap packs and keep playing instead of hunting for a socket.

It is also the long-term answer to battery ageing. Every lithium battery loses capacity over years of charging; with a replaceable design you renew the battery, not the speaker.

Compatibility

The JBL Battery 400 fits exactly two speakers: the JBL PartyBox Stage 320 and the JBL Xtreme 4. It is not compatible with other PartyBox or Xtreme generations, which use different packs such as the Battery 200 and Battery 600.

If you own the PartyBox Club 120, you need the JBL Battery 200 instead; the PartyBox 520 takes the JBL Battery 600.

How the Swap Works

The battery sits behind a tool-free door on the speaker. Open it, slide the depleted pack out, click the charged JBL Battery 400 in and close the door. The whole exchange takes well under a minute.

In the PartyBox Stage 320 a full pack delivers up to 18 hours of playtime; in the Xtreme 4 it delivers up to 24 hours, with actual runtime depending on volume and, on the Stage 320, the light show.

Who Needs a Spare Battery?

Three kinds of owners get real value from a second pack. Hosts who run long events: weddings, desert camps and beach days that outlast a single charge. Anyone renting speakers out, where downtime is lost money. And owners planning to keep their speaker for many years, since a fresh pack later restores day-one runtime.

If your speaker rarely leaves the house and always plays near a socket, you can safely skip the spare; both compatible speakers also run on mains power.

Battery Care Tips for UAE Conditions

Lithium batteries dislike heat, and UAE summers are serious heat. Store the spare JBL Battery 400 indoors rather than in a parked car, where cabin temperatures can pass 60 degrees and permanently reduce capacity.

For long storage, keep the pack at around half charge rather than full or empty; this measurably slows ageing. Top it up every couple of months if the speaker sits unused.

Before an event, charge both packs the night before. Swapping a warm depleted pack for a cool charged one mid-party is exactly what the system is designed for.

JBL Battery 400 Technical Specifications

• Type: Rechargeable Li-ion battery pack
• Capacity: 68Wh (7.2V / 9444mAh)
• Compatible With: JBL PartyBox Stage 320, JBL Xtreme 4
• Playtime: Up to 18 hours in Stage 320, up to 24 hours in Xtreme 4
• Installation: Tool-free swap via battery door
• Charging: Charges inside the speaker
• Dimensions (W x H x D): 8.9 x 2.5 x 9.3 cm
• Weight: 0.35 kg
• Warranty: 1-year warranty from Totot

Frequently Asked Questions

Which speakers does the JBL Battery 400 fit?

Exactly two: the JBL PartyBox Stage 320 and the JBL Xtreme 4. Other JBL speakers use different battery models.

How long does it last per charge?

Up to 18 hours in the PartyBox Stage 320 and up to 24 hours in the Xtreme 4, depending on volume and light show use.

How is the battery charged?

Inside the speaker. Fit the pack, plug the speaker into mains power, and it charges; the Stage 320 fills it in about 3 hours.

Do I need tools to swap it?

No. The battery door opens by hand and the pack clicks in and out in seconds.

Is it worth buying with the speaker?

If your events run past a single charge or happen away from power, yes; a charged spare doubles your total runtime.

Pair it with the JBL PartyBox Stage 320 or the JBL Xtreme 4, or browse all JBL products at Totot.ae. For full manufacturer details, visit the official JBL Battery 400 page.

totot.ae ships the JBL Battery 400 across the UAE with fast Aramex delivery, Tabby and Tamara payment options, and a 14-day return policy.