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Detailed Description:

The 18650 3-cell series battery holder is an essential and versatile component for anyone looking to build a custom power source for their electronics projects. This specific model, often identified by the product code ET8037, provides a clean and organized way to house three standard 18650 lithium cells in a series configuration. By connecting the cells sequentially, this holder transforms the individual 3.7V nominal voltage of each cell into a combined output of 11.1V, with a fully charged voltage reaching 12.6V. This makes it an ideal power solution for a wide range of devices that require a higher voltage, such as robotics, drones, and portable lighting.

Constructed from durable ABS plastic, this lithium battery case provides a secure and stable housing for your batteries, preventing them from shorting or moving. The open-top design, specified as a case without a cover, allows for easy insertion and removal of the batteries, which is a significant convenience for quick charging or replacement. For added safety and convenience, the holder comes with pre-soldered positive and negative leads, simplifying connections to your circuit without the need for additional soldering. Whether you're a seasoned hobbyist or a beginner in electronics, this 18650 series battery holder is a reliable foundation for creating a powerful and safe DIY lithium battery pack.

This 3-cell battery holder is designed to hold three standard AA batteries, providing a total voltage of 4.5V (1.5V x 3). It includes clearly labeled polarity, spring contacts for secure battery seating, and red (+) and black (–) wire leads for connecting to your circuit or breadboard.

Ideal for powering low-voltage circuits, such as Arduino boards, LEDs, sensors, or small DC motors, this holder is made from durable ABS plastic and is suitable for DIY kits, prototypes, and portable applications.

Key Features:

• Holds 3 AA batteries (not included)

• Provides 4.5V DC output (with alkaline cells)

• Pre-attached wire leads (red/black ~15cm)

• Clearly marked polarity for easy setup

• Made from durable black ABS plastic

• Compact and lightweight design

• Suitable for robotics, toys, and DIY electronics

• Easy mounting with screw holes or glue

Technical Specifications:

How to Use:

1. Insert three AA batteries in correct orientation

2. Connect red wire to +V, black wire to GND

3. Use to power Arduino boards, LED strips, motors, or sensors

4. Ensure you disconnect when not in use to prevent battery drain

Applications:

• Arduino and electronics power supply

• Robotics and embedded systems

• Toys, LED lighting, and small gadgets

• STEM kits and student projects

• Portable breadboard or sensor testing setup

• DIY remote or wireless device battery pack

Package Includes:

• 1 x 3-Cell AA Battery Holder with Wire Leads
  (Batteries not included – available separately)