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Item #:
10204740
Kratax 3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker, Real Capacity, Same Quality as
87% of respondents would recommend this to a friend
Item #:
10204740
IMP 17
Price Details
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Order now and get it around Sunday, September 20
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Kratax Upgraded 3500mAh Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Speaker, Same Quality As Original Battery.
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What Stands Out
High Capacity
The Kratax 3500mAh battery offers exceptional power, ensuring your Harman Kardon Onyx speakers stay operational longer, delivering extended playtime without frequent recharges.
Compatible Design
Designed specifically for Harman Kardon Onyx Models 1 through 4, this battery ensures a seamless fit and easy installation, getting your speaker back to premium performance quickly.
Quality Assurance
Manufactured to meet or exceed original specifications, the Kratax battery guarantees reliable performance, mirroring the quality of the original, making it a trustworthy replacement for your audio needs.
Product Details
- High capacity 3500mAh lithium battery with 3.7V/12.95Wh voltage for longer lasting performance
- Compatible with Harman Kardon Onyx Studio 1, 2, 3, 4, li11b001f wireless bluetooth speakers
- Built-in protection against overcharging, over-discharging, short-circuit, and charging issues
- Includes screwdriver and pry bar for easy replacement process
- Comes with sponge strip for noise prevention during music playback
- Specialized professional battery manufacturer with ISO9001, RoHS, and CE certifications
| Package Weight | 2.53 Pound |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Frequent Travelers
Ideal for users who need a reliable battery replacement while on the go, ensuring uninterrupted music enjoyment.
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Audio Professionals
Perfect for sound engineers or musicians who rely on consistent performance from their Harman Kardon speakers.
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DIY Enthusiasts
Great for users comfortable with replacing batteries in their devices, seeking cost-effective solutions for older speakers.
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Occasional Users
Not suitable for those who rarely use their speakers, as original batteries may last longer without replacement.
Product Description
Kratax 3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker, Real Capacity, Same Quality as Original Battery
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the capacity of the Kratax replacement battery for the Harman Kardon Onyx Studio?
Answer: The Kratax replacement battery has a capacity of 3500mAh. This capacity ensures that your Harman Kardon Onyx Studio speaker operates efficiently, providing extended playback time and minimizing interruptions during use. With this capacity, you can enjoy your favorite music or podcasts for longer periods, whether you're at home or on the go. -
Question:
Is the Kratax battery compatible with all versions of the Harman Kardon Onyx Studio?
Answer: Yes, the Kratax 3500mAh replacement battery is designed to be compatible with the Harman Kardon Onyx Studio models 1, 2, 3, and 4. It maintains the same specifications and performance as the original battery, ensuring seamless integration with your device. This compatibility allows you to replace your battery without worrying about fit or functionality issues. -
Question:
How does the Kratax battery compare to the original Harman Kardon battery?
Answer: The Kratax battery matches the performance and quality of the original Harman Kardon battery. It is manufactured with high-quality materials and undergoes strict quality control processes. Users can expect similar runtime and efficiency, ensuring that their speaker operates just as it did when new. This makes it an excellent choice for those seeking reliable battery replacement. -
Question:
Can I install the Kratax replacement battery myself?
Answer: Yes, you can install the Kratax replacement battery yourself, as it comes with a user-friendly design that aligns with the original battery specifications. While basic tools and a little technical know-how might be necessary, many users find the process straightforward. There are various online tutorials available that can guide you through the installation, making it a great project for DIY enthusiasts. -
Question:
How long does the Kratax battery take to charge?
Answer: The Kratax 3500mAh battery typically charges fully in about 4 to 6 hours, depending on your charger and usage. This duration allows you to quickly get your Harman Kardon Onyx Studio back to full life. Once charged, you can enjoy hours of continuous music playback, making it ideal for gatherings, parties, or personal listening sessions. -
Question:
What maintenance does the Kratax battery require?
Answer: To ensure optimal performance, it's recommended to keep the battery contacts clean and avoid exposing the battery to extreme temperatures. Regularly discharging the battery completely before recharging can help maintain its longevity. These simple maintenance practices can enhance the overall lifespan and functionality of your Kratax replacement battery. -
Question:
What features make the Kratax battery stand out?
Answer: The Kratax battery features real capacity, ensuring it delivers the same power and performance as the original battery. Its robust design and high-quality construction enhance durability, making it a reliable option for users. Additionally, it goes through rigorous testing, providing peace of mind regarding its safety and performance in your Harman Kardon Onyx Studio. -
Question:
Can the Kratax battery be used as a backup power source?
Answer: While the Kratax battery is designed specifically for the Harman Kardon Onyx Studio, it provides reliable backup power for extended listening sessions. Having this replacement on hand means you can quickly swap out a depleted battery, ensuring your music experience isn’t interrupted, whether at home, in the park, or during travels. -
Question:
Where can I find the Kratax 3500mAh replacement battery?
Answer: You can buy the Kratax 3500mAh Rechargeable Replacement Battery for the Harman Kardon Onyx Studio exclusively on Ubuy in Isle of Man. Ubuy offers a convenient shopping experience and ensures that customers receive authentic products that meet their quality expectations.
Kratax Portable Bluetooth Speakers Editorial Review
The replacement battery for the Harman/Kardon Onyx Studio 1/2/3/4 Bluetooth speaker is a highly-rated product, based on the frequently asked questions and the customer reviews. It has a higher capacity (3200mAh) than the original battery, giving longer standby time, and the product is easy to install. Some caution has been recommended, however, as some users have noted that the battery is smaller than the original, and the battery leads are shorter, but it comes with extra foam pieces and tape to keep it in place. Additionally, while manufacturers recommend professional installation, the battery can be easily replaced based on instructions and videos available on YouTube.
Customer Reviews & Ratings
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Pros
- Higher capacity than original battery, providing longer standby time
- Easy installation
- Comes with extra foam pieces and tape
- Very cost-effective solution to recharge speakers
Cons
- Smaller in size than original battery
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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IMP 17
Order now and get it around Sunday, September 20
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Real capacity of 3500mAh
- Applicable for Harman Kardon Onyx Studio models 1/2/3/4
- Constructed with a high-precision voltage detection circuit and delay circuit
- Passed international certifications such as ISO9001, RoHS, and CE
- Includes replacement battery, tools, and adhesive tape.
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