Protected 3.7v 3000mAh Lithium Battery Replacement for Harman Kardon Onyx Mini Bluetooth Speaker

Specifications

Company Profile

Product Overview

Upgrade to our premium 3.7V 3000mAh lithium-ion replacement battery – the ultimate power solution designed specifically for audiophiles who refuse to compromise on sound quality. Unlike generic batteries that cause voltage instability leading to audio distortion, our battery maintains a rock-solid 3.7V output throughout discharge cycles, ensuring your speaker delivers crystal-clear highs and deep bass without interruption.

With 20% more capacity than standard 2500mAh alternatives, you'll enjoy up to 8 hours of continuous playback on a single charge – perfect for outdoor parties, beach trips, or all-day work sessions. The built-in triple-layer protection circuit safeguards against overcharging, overheating, and short circuits, making it 3x safer than unbranded options while extending your speaker's lifespan by up to 2 years.

Engineered with precision using A-grade lithium cells, this battery features a low self-discharge rate of ≤0.5% per month, preserving 95% of its capacity even after 6 months of storage – ideal for emergency backups. The nickel-plated connectors resist corrosion 5x longer than standard tin-plated alternatives, ensuring reliable contact in humid environments.

Application

I.Outdoor Adventures & Travel: 

Power your speaker through weekend camping trips, beach days, or hiking excursions. The enhanced capacity supports continuous playback for up to 15 hours (depending on volume levels), eliminating the need for frequent recharging.

II.Home Audio Enhancement:

Revive your bedroom, kitchen, or bathroom sound setup with consistent bass response and clear highs—no more sudden power drops mid-song during morning routines or dinner parties.

III.Portable Office & Remote Work: 

Use your Onyx Mini as a mobile Bluetooth audio hub during outdoor work sessions or co-working meetups. Reliable power means uninterrupted podcast listening, virtual meetings, or focus-enhancing background music.

IV.Gift & Repair Projects:

Perfect for gifting to friends or family members with aging speakers, or for integrating into custom audio restoration builds. It's also widely used by technicians and repair shops specializing in premium audio equipment refurbishment.

V.Sustainability & E-Waste Reduction:

By replacing the battery instead of discarding the entire speaker, you actively contribute to a circular economy. Extend the lifecycle of high-quality electronics and reduce environmental impact—one smart upgrade at a time.

Workers Production

Product Package

Why Choose Us?

I.Guaranteed Compatibility & Zero-Risk Fit:

We don't guess compatibility. Each battery is meticulously tested and verified to be a perfect physical and electrical match for the Harman Kardon Onyx Mini. The connectors and dimensions are precise, ensuring a seamless, no-modification-required installation.

II.Uncompromising Safety with Intelligent Protection:

Your safety is non-negotiable. Our batteries are equipped with a superior-grade Protection Circuit Module (PCB). This intelligent system proactively prevents dangerous situations like overcharging, over-discharging, and short circuits, giving you absolute peace of mind.

III.Premium Cell Quality for Maximum Capacity & Lifespan:

We use only high-grade, brand-name Li-ion cells that are rigorously tested for consistency and performance. This translates to a true 3000mAh capacity (no inflated numbers) and a lifespan that withstands hundreds of charge cycles with minimal degradation.

IV.Seamless Customer Experience, From Order to Installation:

From a secure checkout process to fast shipping and clear packaging, we ensure a smooth experience. We go the extra mile by providing detailed, easy-to-follow installation resources (guides and videos) to empower your successful repair.

V.Responsive Support & Warranty You Can Trust:

Have a question before or after your purchase? Our dedicated support team is here to help. We stand behind our products with a solid warranty, because we are confident in the quality we deliver.

Certification

FAQ

Q1: Is Foshan Softchip Electronics Co., Ltd. an original factory?

A: Yes, Foshan Softchip  Electronics Co., Ltd. is an original factory. We directly engage in product manufacturing, eliminating intermediary links and enabling us to offer customers more cost-effective products.

Q2: How many years of production experience does your company have?

A: Our company has 13 years of production experience. Over the long-term practice, we have accumulated rich technical and management expertise, allowing us to efficiently and steadily produce high-quality products.

Q3: Does your company have complete production equipment?

A: Absolutely. We possess complete and advanced production equipment that covers all aspects from raw material processing to finished product assembly. This provides a solid hardware guarantee for the quality of our products.

Q4: What are the main products your company produces?

A: Our company mainly produces batteries for various models of JBL speakers and iPhone batteries. These products undergo strict quality inspections and have stable and reliable performance.

Q5: Is there a guarantee for product supply when cooperating with your company?

A: There is definitely a guarantee. As an original factory, we have strong production capacity and a stable supply chain system. We can arrange production in a timely manner according to customer needs to ensure on-time and sufficient supply.