3.7V 2400mAh Li-Ion Rechargeable Battery Pack – High Capacity Compact Cell (40x30x20mm)

Overview

The 3.7V 2400mAh Lithium-Ion Battery Pack is engineered for space-constrained applications that require a significant power reserve. With a 2400mAh capacity, it provides nearly double the runtime of standard “mini” lithium cells, making it a favorite for long-range IoT sensors, portable audio amplifiers (like the PAM8403), and small robotic platforms. Its rigid rectangular shape (40mm x 30mm x 20mm) is designed for a snug fit in standard project enclosures.

Key Features 

• High Energy Density: Packs 2400mAh into a small volume, offering an excellent balance of size and runtime.

• Pre-Wired: Comes with standard positive (Red) and negative (Black) lead wires for easy soldering or connector attachment.

• Stable Discharge: Maintains a steady 3.7V nominal output, perfectly suited for modern 3.3V and 5V microcontrollers (via a regulator).

• Multi-Purpose: Excellent for wearables, medical device prototypes, and remote wireless nodes.

Technical Specifications

Ideal For: 

• Wireless Nodes: Keep your ESP8266 or ESP32 running for days without a recharge.

• Portable Audio: Pair it with a PAM8403 amplifier for a pocket-sized stereo.

• Robotics: Power small servo motors or micro-controllers in mobile bots.

• Emergency Lighting: Build custom LED backup lights for your workspace.