18650 3 Cell Battery Pack (11.1V) with DC Jack – Lithium-Ion Rechargeable Pack

The 18650 3 Cell Battery Pack (11.1V) with DC Jack – Lithium-Ion Rechargeable Pack is a high-performance rechargeable power source designed to deliver stable and reliable DC power for a wide range of electronic, robotics, automation, and portable applications. Built using premium-quality 18650 Lithium-Ion cells, this battery pack provides excellent energy density, long operating life, and dependable performance, making it suitable for both professional and DIY electronic projects.

The battery pack is configured as a 3-cell series (3S) arrangement, providing a nominal output voltage of 11.1V and a fully charged voltage of approximately 12.6V. With a capacity of 2600mAh, it offers extended operating time for battery-powered devices while maintaining a compact and lightweight design. The pack is equipped with a standard DC output jack, allowing quick and convenient connection to compatible electronic equipment without the need for additional wiring or custom connectors.

Manufactured using high-quality rechargeable Lithium-Ion cells, the battery pack delivers stable voltage output, low self-discharge, high energy efficiency, and long charge-discharge cycle life. It is designed to provide consistent power for applications requiring reliable portable energy storage. The integrated wiring and DC connector simplify installation, making it ideal for prototype development, portable systems, and embedded electronics.

This battery pack is commonly used in Arduino projects, ESP32 development boards, Raspberry Pi systems, robotics, IoT devices, LED lighting systems, CCTV cameras, wireless communication equipment, portable instruments, battery-powered tools, educational projects, automation systems, GPS devices, portable testing equipment, security systems, and DIY electronics.

The rechargeable design helps reduce operating costs while minimizing environmental waste compared to disposable batteries. When charged using a compatible 3S Lithium-Ion battery charger, the battery pack can be recharged hundreds of times, providing dependable long-term performance.

Whether you are building a mobile robot, powering an embedded system, designing a portable electronic device, or replacing an existing battery pack, the 18650 3 Cell Battery Pack (11.1V) with DC Jack provides a reliable, efficient, and convenient power solution.

Working Principle

The battery pack consists of three 18650 Lithium-Ion cells connected in series (3S configuration).

During charging, lithium ions move from the positive electrode to the negative electrode within each cell, storing electrical energy. During discharge, the ions move back to the positive electrode, generating electrical current that powers the connected device.

The series connection increases the overall output voltage to 11.1V nominal, while maintaining the battery capacity of 2600mAh. The integrated DC jack provides a convenient output connection for compatible electronic devices, allowing quick installation and reliable power delivery.

For safe operation and maximum battery life, the pack should always be charged using a compatible 3-cell (3S) Lithium-Ion battery charger.

Key Features

• High-quality 18650 Lithium-Ion battery pack

• 3-cell series (3S) configuration

• Nominal voltage: 11.1V

• Fully charged voltage: 12.6V

• Capacity: 2600mAh

• Standard DC output jack

• Rechargeable and reusable

• High energy density

• Stable voltage output

• Low self-discharge rate

• Long charge-discharge cycle life

• Lightweight and compact construction

• Reliable power delivery

• Easy installation

• Suitable for portable electronic devices

Applications

The 18650 3 Cell Battery Pack (11.1V) is widely used in:

• Arduino projects

• ESP32 development

• ESP8266 projects

• Raspberry Pi systems

• Robotics

• IoT devices

• LED lighting systems

• CCTV cameras

• Wireless communication equipment

• Portable electronic devices

• Battery-powered instruments

• Automation systems

• Security systems

• GPS devices

• Embedded systems

• Educational electronics

• DIY electronics

• Portable testing equipment

• Electronic prototyping

• Laboratory projects

Specifications

• Product Type: Rechargeable Lithium-Ion Battery Pack

• Battery Chemistry: Lithium-Ion

• Cell Type: 18650

• Configuration: 3S (3 Cells in Series)

• Nominal Voltage: 11.1V

• Fully Charged Voltage: 12.6V

• Rated Capacity: 2600mAh

• Output Connector: DC Jack

• Rechargeable: Yes

• Charging Method: Compatible 3S Lithium-Ion Battery Charger

• Application: Portable electronic equipment

Package Includes

• 1 × 18650 3 Cell Battery Pack (11.1V) with DC Jack

Safety Precautions

• Charge only with a compatible 3S Lithium-Ion battery charger.

• Do not overcharge or over-discharge the battery pack.

• Avoid short-circuiting the output terminals.

• Do not puncture, crush, or expose the battery pack to fire or excessive heat.

• Store in a cool, dry place away from direct sunlight.

• Do not use the battery pack if it becomes damaged, swollen, or overheated.

• Observe correct polarity when connecting to electronic devices.

• Keep away from water, moisture, and conductive materials.