Dependable 7.4V 10400mAh Lithium Battery Replacement for JBL Boombox2 Bluetooth Speaker

Specifications

	Brand Name:	Softchip
	Place of Origin:	Guangdong, China
	Model Number:	Sun-inte-213
	Size:	21.8*73.6*133mm
	Volt:	7.4V
	Capacity:	10400mAh
	Usage:	For JBL Boombox 2 bluetooth speaker
	Certificate:	Ce Rosh EMC
	Warranty:	12 months
	OEM/ODM:	Acceptable

Product Overview

Upgrade your outdoor audio experience with our premium 7.4V 10400mAh Lithium-Ion Replacement Battery, expertly engineered as a direct-fit power solution for the JBL Boombox 2 Bluetooth Speaker.

Designed to restore your speaker’s original performance — or even surpass it — this high-capacity battery delivers extended playtime, stable voltage output, and long-term reliability for uninterrupted music sessions wherever life takes you.

Crafted with advanced lithium-ion cell technology and built-in protection circuits, this replacement battery ensures safe charging, efficient energy conversion, and resistance against overcharging, short circuits, and excessive heat.

With a nominal voltage of 7.4V and a robust 10400mAh capacity (equivalent to ~76.96Wh), it closely matches or exceeds OEM specifications, giving your JBL Boombox 2 renewed endurance for all-day parties, beach trips, camping adventures, and backyard gatherings.

Application

I.Outdoor Adventures: Power your music during hiking, camping, or road trips without worrying about frequent recharging.

II.Beach & Poolside Parties: Enjoy waterproof audio performance paired with long-lasting battery life — perfect for sun-soaked days.

III.Festivals & Tailgating Events: Keep the beats going through extended events where access to outlets is limited.

IV.Home & Backyard Use: Extend daily usage for indoor listening or garden BBQs without constant plugging in.

V.Professional Audio Setups: Mobile DJs and event planners use it as a backup power source for reliable sound on the move.

VI.Eco-Conscious Upgrades: Instead of discarding a fully functional speaker due to a dead battery, choose sustainability by upgrading only the core component.

Production Line

Workers Production

Quality Inspection Area

Product Package

Why Choose Us?

I.OEM-Level Engineering

We collaborate with certified battery labs to replicate factory-grade performance. Each cell is sourced from trusted suppliers and assembled under strict ISO-certified conditions to ensure consistency, safety, and optimal energy density.

II.Extended Capacity Without Compromise

Unlike generic clones that promise high mAh but fail under real-world loads, our 10400mAh battery is lab-tested under continuous discharge simulations. Real-world results show up to 30% longer playback time compared to degraded original batteries.

III.Smart Protection System Built-In

Equipped with a multi-layer PCB protection module that guards against over-voltage, over-current, overheating, and deep discharge — protecting both your speaker and your investment.

IV.Plug-and-Play Installation

No soldering, no technical skills required. The battery comes pre-wired with the correct connector and polarity alignment, allowing for easy DIY replacement in under 15 minutes (tools not included).

Certification

FAQ

Q:Is this 10,400mAh battery compatible with the original JBL Boombox 1 or 3? 

A:No. This 7.4V lithium battery is specifically engineered for the JBL Boombox 2 only. It features the precise connector and voltage required for the second-generation model. Please check your speaker’s model name on the bottom panel to ensure compatibility before purchasing.

Q: How long will my JBL Boombox 2 play with this 10,400mAh replacement battery? 

A: Our 10,400mAh high-capacity battery pack is designed to meet or exceed original performance standards. Depending on your volume settings and lighting effects, you can expect 15-24 hours of playtime. It provides a reliable power source for long outdoor gatherings and parties.

Q: Do I need professional help to install the JBL Boombox 2 battery replacement? 

A: While the process is a manageable DIY project, it requires patience and a specific screwdriver set (such as Phillips and Torx). Because the JBL Boombox 2 is water-resistant, you must ensure the seals are correctly realigned during reassembly. We recommend following a professional Step-by-step battery replacement guide video.

Q:Is the 7.4V lithium-ion battery pack safe for fast charging? 

A: Absolutely. Our rechargeable lithium-ion cells are equipped with an advanced Integrated Circuit (IC) protection system. This prevents overcharging, short-circuiting, and overheating. It is fully compatible with your original JBL power adapter for safe and efficient charging.

Q:How can I extend the lifespan of my new JBL Boombox 2 battery?

A: To maximize your battery life cycle, avoid leaving the speaker in extreme temperatures (above 45°C/113°F). For long-term storage, it is best to keep the battery charged at around 50%. Our high-quality cells are designed to last for over 500 charge cycles with proper care.