18650 Battery Holder Case (2-Cell with Wires – Series Connection)

18650 Battery Holder Case (2-Cell with Wires – Series Connection)

The 2-Cell 18650 Battery Holder Case is designed to hold two 3.7V 18650 lithium-ion cells securely and provide a total output of approximately 7.4V (in series connection). It’s ideal for powering Arduino projects, robotic systems, DIY gadgets, and portable electronic devices.

🔹 Key Features:

Type: Dual 18650 battery holder (2S configuration)

Material: Durable ABS plastic

Output Voltage: 7.4V (3.7V × 2 cells in series)

Wire Leads: Pre-soldered red (+) and black (–) wires for easy connection

Contacts: Nickel-plated steel springs for strong and stable contact

Wire Length: Approx. 15–20 cm

Compact Design: Lightweight and easy to mount

🔹 Working Principle:

This holder connects two 18650 lithium-ion cells in series, combining their voltage (adds up to ~7.4V) while keeping the same current capacity. The output can directly power small motors, microcontrollers, or be used with voltage regulators for stable operation.

🔹 Applications:

DIY electronics and Arduino-based projects

Robotics and automation systems

Battery-powered IoT devices

Portable tools and LED lighting systems

Small drones and RC projects

🔹 Note:

Batteries not included — for illustration purposes only.

Always ensure correct polarity when inserting batteries.

Do not short-circuit or overcharge the batteries.