Rechargeable (Secondary) Lithium Batteries

Secondary Batteries (Rechargeable Batteries)

Secondary batteries, also known as rechargeable batteries, provide reliable and reusable power for a wide range of modern electronic devices. Kingway supplies high-quality lithium-ion and lithium polymer battery solutions designed to meet the power demands of industrial equipment, consumer electronics, medical devices, and emerging technologies.

Through our global sourcing network and engineering expertise, Kingway helps product designers and manufacturers integrate dependable energy storage into their products. From individual battery cells to fully customized battery packs with protection circuitry and wiring harnesses, we support projects from prototype development through full production.

Our goal is to provide battery solutions that combine high energy density, stable performance, and flexible design options so your products operate reliably in real-world environments.

For a visual overview of Kingway’s rechargeable battery solutions, download the printable product flyer.

Download the Secondary Batteries Overview (PDF)

Lithium-Ion Cylindrical Batteries

Lithium-ion cylindrical cells are widely used across many industries due to their rugged construction, high energy density, and consistent performance. These batteries feature durable metal shells and tube-shaped designs that allow for reliable operation in demanding environments.

Common lithium-ion cylindrical cell sizes include:

• 18650
• 21700
• 14500
• 10400
• 26650
• 32650

These battery cells are commonly used in power tools, portable electronics, energy storage systems, electric scooters, and electric vehicles where reliable and scalable power solutions are required.

Lithium Polymer (Li-Po) Pouch Batteries

Lithium polymer pouch cells provide a lightweight and flexible alternative to cylindrical batteries. Their thin foil-pouch construction allows them to be designed in a wide variety of shapes and sizes, making them ideal for compact or uniquely shaped electronic devices.

Standard battery pack sizes range from approximately 100mAh to 11,800mAh, allowing product designers to select the appropriate capacity for their application.

Lithium polymer batteries offer high energy density and stable operating voltage, typically averaging above 3.7V, making them well suited for portable electronics, connected devices, and advanced battery-powered products.

Custom Battery Pack Solutions

In addition to standard battery cells, Kingway provides customized rechargeable battery pack solutions designed specifically for your product. These assemblies can include integrated wiring harnesses, protection circuits, and scalable configurations that meet the electrical and mechanical requirements of your design.

• Custom pig-tail wire harness connections
• Integrated battery protection circuits
• Modular and scalable pack configurations
• Customized battery pack design for OEM products

By combining battery sourcing with engineering support and manufacturing coordination, Kingway simplifies the process of integrating reliable energy storage into your product.

Applications for Rechargeable Batteries

Rechargeable lithium battery technology powers a wide variety of modern devices and systems. Kingway secondary battery solutions are commonly used in:

• Consumer electronics
• Industrial tools and equipment
• Medical devices
• E-bikes and electric scooters
• Electric vehicles
• Energy storage systems

Our experience across these industries allows us to recommend battery configurations that balance performance, safety, and long-term reliability.

Quality and Certifications

Kingway works with manufacturing partners that meet international quality and safety standards. Many of the rechargeable battery products we supply comply with certifications such as:

• UN38.3 transportation safety testing
• CE compliance
• RoHS environmental standards
• ISO 9001 quality management systems

These certifications help ensure that battery components meet global requirements for performance, safety, and environmental responsibility.

Download the Secondary Batteries Overview

For a visual overview of Kingway’s rechargeable battery solutions, download the printable product flyer.

Download the Secondary Batteries Overview (PDF)

Work With Kingway

Whether you need individual battery cells or fully integrated battery pack solutions, Kingway provides sourcing expertise, engineering support, and reliable global manufacturing relationships to power your products.

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