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Rectangular lithium polymer battery pack black plastic casing wire connector visible

NShi

NShi Replacement Battery for JBL PartyBox 300 7.4V 10400mAh

SKU CH-WYYA-532Y1

Replacement lithium-polymer battery for JBL PartyBox 300, 7.4V 10400mAh 76.96Wh with CE, UL and RoHS safety certifications

  • Battery TypeLithium Polymer
  • Replacement battery restores PartyBox 300 power
  • 4 V 10400 mAh capacity matches original specs
  • Lithium-polymer cells deliver 76.96 Wh energy
  • Built-in protection guards against over-charge and short-circuit
  • CE, UL and RoSH certified for safety

Replacement Battery for JBL PartyBox 300

This lithium-polymer battery replaces the original power pack in a JBL PartyBox 300 speaker. It delivers 7.4V and 10400mAh capacity for portable audio use. The unit carries ROSH, CE and UL certifications and includes over-charge, over-discharge, over-heat, over-current and short-circuit protection.

Verify Part Number and Physical Dimensions

Before ordering, confirm the original battery part number matches 2INR19/66/4, GSP-ICR2S4P-PB350A or SUN-INTE-125. Check that the replacement size of 106.00 x 104.40 x 47.00mm fits the speaker compartment. Ensure the JBL model is JBLPARTYBOX300CN or PartyBox 300.

Restores Portable Operation Without Cables

The 490.0g pack slots into the PartyBox 300 battery bay and connects to the existing wiring harness. It frees the speaker from mains power for outdoor events. No extra chargers or adapters are required beyond the speaker's own charging circuit.

Highlights

  • Replacement battery restores PartyBox 300 power
  • 4 V 10400 mAh capacity matches original specs
  • Lithium-polymer cells deliver 76.96 Wh energy
  • Built-in protection guards against over-charge and short-circuit
  • CE, UL and RoSH certified for safety

Specifications

Battery TypeLithium Polymer

Questions about this item

Does the package include tools or connectors, or must I buy them separately?

The battery is supplied as a standalone unit; no installation tools or extra cables are included in the box.

How do I confirm this 7.4 V 10400 mAh pack is the right one for my PartyBox 300?

Match the original part number — 2INR19/66/4, GSP-ICR2S4P-PB350A or SUN-INTE-125 — to the label on your existing battery before ordering.

What does the 76.96 Wh rating mean for actual speaker run-time?

It stores 76.96 Wh of energy; real-world play time depends on volume level and audio content, so run-time will vary with use.

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