18650 Lithium Battery Cell: 3.7V 2600mAh Capacity with Safety Certifications

This 18650 format lithium-ion battery cell delivers 3.7 volts of power with a rated capacity of 2600mAh, making it a suitable component for various electronic devices and DIY projects. Designed for applications requiring dependable rechargeable energy, it combines a stated cycle life with built-in safety mechanisms. The cell's specifications indicate its use in contexts where high current discharge and repeated charging are expected, from power tools to portable lighting and backup systems. Its compliance with international standards provides assurance regarding its safety for use and transportation.

Features and Construction

The core features of this battery are defined by its electrical specifications and protective elements. It is constructed as a single lithium-ion cell within the common 18650 cylindrical form factor.

Material and Build

The battery utilises lithium-ion chemistry to provide rechargeable power. Its internal construction includes a PTC (Positive Temperature Coefficient) resistor, which is a key safety component designed to increase resistance and reduce current flow if temperatures rise excessively. This works alongside other stated protective circuits that guard against overcharging and over-discharging, helping to maintain safe operating parameters throughout the battery's use.

Size and Practical Fit

The battery conforms to the standard 18650 size, measuring 18mm in diameter and 65mm in length. This is a widely adopted format compatible with many battery holders, chargers, and devices designed for this cell type. Its physical dimensions ensure it can directly replace other 18650 cells in applications where the specific capacity and discharge characteristics meet the required specifications, facilitating straightforward integration into existing equipment.

Uses and Placement

The combination of capacity, voltage, and safety features informs its potential applications. It serves as a component for both commercial products and personal projects.

Event or Professional Use

For professional or commercial equipment, this cell can be utilised in products like portable work lights, cordless power tools, or emergency exit lighting where reliable, rechargeable power is needed. The UN38.3 certification is particularly relevant for the safe transport of devices containing these batteries. The specified cycle life and capacity retention support use in professional settings where equipment is regularly used and recharged, contributing to reduced maintenance intervals.

Everyday Home Use

In home and hobbyist contexts, this 18650 cell is suitable for integration into custom electronics, high-power torches, or home energy storage projects. The lack of memory effect means it can be conveniently charged as needed without requiring a full discharge cycle first. Users should ensure any custom application includes proper battery management to leverage the built-in protection features effectively for safe everyday operation.

Benefits and Buying Value

The value of this battery cell lies in its stated technical performance and compliance with recognised standards, offering a known quantity for integration into various projects.

Reuse and Low Maintenance

The specified long cycle service life, where capacity does not fall below 85% of the rated 2600mAh after 500 charge-discharge cycles, indicates a potential for extended use before replacement is needed. This contributes to a lower total cost of ownership over time for applications that rely on rechargeable cells. The integrated protection circuits help maintain the battery's health by preventing damaging conditions, which can further support its longevity in service.

Why Choose This Product

This cell provides a clear specification: a 3.7V, 2600mAh lithium battery in the 18650 format with stated safety protections and certifications. For users sourcing components, these concrete details allow for informed matching to project requirements regarding voltage, capacity, and safety compliance. The listed certifications (CE, UN38.3, UL) offer verified benchmarks for performance and safety, which is a practical consideration for both commercial integrators and serious hobbyists.