Latest company case about Custom 26700 Lithium Battery Pack for Wireless Bluetooth Speaker
Successful Case
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Corporate Solutions

Custom 26700 Lithium Battery Pack for Wireless Bluetooth Speaker

2026-07-08
Project Background

A customer from the United States approached us with a requirement for a custom lithium battery pack designed for a wireless Bluetooth speaker. The project required a compact, reliable power solution that could be easily integrated into the customer's product while providing stable performance and enhanced safety.

Customer Requirement

After discussing the application and technical specifications, the customer confirmed the need for a customized battery that could provide stable power output, adapt to the internal structure of the wireless Bluetooth speaker, and meet product safety requirements.

The customer's key specifications included:

  • Application:Wireless Bluetooth speaker
  • Battery Type: Lithium-ion battery
  • Cell Model: 26700
  • Nominal Voltage: 3.2V
  • Capacity: 4000mAh
  • Configuration: 1S1P
  • Protection: Integrated PCM protection board
  • Connection: Terminal wires
  • Label: Customized battery label with customer-specified information

In addition to the battery itself, the customer required complete engineering support before production to ensure the design matched the product's electrical and mechanical requirements.

Our Solution

After reviewing the project requirements, our engineering team developed a customized battery solution based on the customer's specifications.

The support we provided included:

  • Battery pack structural design
  • Battery dimension and assembly drawings
  • PCM protection circuit design
  • Wiring and connector confirmation
  • Customized battery label design
  • Technical review and solution confirmation with the customer

Throughout the development process, we maintained close communication with our clients, verifying every design detail to ensure that each component met their technical and assembly requirements. Once the battery drawings, PCM circuit diagrams, and technical specifications were approved, we arranged production according to the confirmed design.

Manufacturing and Delivery

Following final approval, the battery packs were manufactured using the specified 26700 lithium cells and assembled under our quality control process.

Each battery pack was produced according to the confirmed specifications, including:

  • 3.2V 4000mAh (1S1P) configuration
  • Integrated PCM protection board
  • Terminal wire assembly
  • Customized product labeling
  • Inspection before shipment

The completed battery packs were delivered in accordance with the agreed production schedule and technical requirements.

Project Outcome

This project demonstrates our ability to provide end-to-end customized lithium battery solutions for portable electronic devices. From initial engineering design and technical documentation to production and delivery, we worked closely with the customer to ensure the final battery pack met the required specifications.

Whether customers require custom battery dimensions, protection circuits, connectors, labels, or complete battery pack development, our engineering team can provide tailored solutions for a wide range of applications.

Looking for a Custom Battery Solution?

We specialize in the design and manufacture of custom lithium battery packs for Bluetooth speakers, portable electronics, industrial equipment, medical devices, IoT products, and many other applications. If your project requires a battery with specific voltage, capacity, dimensions, connectors, or protection functions, our team is ready to help develop a solution that fits your product requirements.