Extended-Runtime 3.7v 2600mAh Lithium Battery Replacement for Harman Onyx Studio 3 Bluetooth Speaker

Specifications

Company Profile

Product overview

Engineered as a direct OEM replacement for the Harman Kardon Onyx Studio 3, this 3.7V 2600mAh​ lithium-ion battery pack is calibrated to the speaker’s native power profile, restoring runtime and audio stability without altering the factory firmware or sound signature.

The cell is paired with an integrated protection board that manages overcharge / over-discharge / short-circuit​ events, ensuring safe, clean voltage delivery to the amplifier and DSP. The drop-in enclosure aligns with the original battery bay and interfaces with the speaker’s existing charging circuit—no firmware update, soldering, or case modification required. 

Sustainably designed for everyday use, the pack’s materials and construction are chosen to minimize environmental impact without compromising safety or performance. Paired with straightforward documentation and optional video guidance, your replacement journey is designed to be risk-free—from unboxing to first charge.

If you value dependable battery life, safe operation, and the confidence of knowing support is just a message away, this is the OEM-spec replacement your Harman Kardon Onyx Studio 3​ has been waiting for. Restore full-volume evenings and uninterrupted playback—because great sound deserves a battery you can trust.

Application

•Home audio setups, kitchen counters, bedside tables, home offices, and small gatherings​ where uninterrupted playback and consistent sound pressure matter.

•Revive an aging Onyx Studio 3​ that drains too quickly or powers off mid-track; restore playback close to the speaker’s original specification.

•Seamless integration with the original charging system—no firmware updates, no soldering, no case disassembly beyond standard cover removal.

•Ideal for users who value reliability, fast top ups, and long-term value​ over disposable or undersized battery solutions.

Workers Production

Product Package

Why Choose Us?

•True 2600mAh capacity​ you can rely on: we reject inflated specs and validate each batch so your runtime is predictable and repeatable.

•Safety and compliance first: integrated protection board and materials that meet CE / RoHS​ requirements for peace of mind at home and in the office

•Hassl-efree installation: drop-in housing, labeled wiring, and step-by-step instructions mean most users can complete the swap in minutes with basic tools

•Fast, trackable shipping and responsive support: from order confirmation to post-sale questions, we keep you updated and supported 12-month warranty​ and a customer.first approach to returns and defect resolution.

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.