18650 Battery Shield V3 for ESP32 / Arduino

18650 Battery Shield V3 — Portable Power for ESP32 & Arduino Projects

Power your microcontroller projects anywhere with the 18650 Battery Shield V3. Simply slot in a standard 18650 Li-ion cell, connect your ESP32, Arduino, or any 5V/3.3V device, and you have a fully portable, rechargeable power solution. Whether you're building a field sensor, a wearable gadget, or a wireless IoT node, this shield keeps your project running on the go.

Key Features

• Battery: Supports 1× 18650 Li-ion cell (not included)
• Output Voltage: 5V (USB-A output) and 3.3V (pin header)
• Charging: Via Micro-USB input
• On/Off Switch: Built-in power switch
• Protection: Overcharge, over-discharge, and short circuit protection
• Output Pins: 5V, GND, and 3.3V (V3) exposed on both sides
• USB-A Port: Can charge external devices like a mini power bank
• Compact Form Factor: Fits neatly alongside ESP32 / Arduino boards

Pin Description

• 5V: Regulated 5V output
• GND: Ground
• V3 (3.3V): 3.3V regulated output

Typical Applications

• Portable ESP32 / ESP8266 / Arduino projects
• IoT field sensors and data loggers
• Wearable electronics
• DIY power banks
• Robotics and RC projects