Wemos ESP32 IoT Development Board with 18650 Battery Shield – WiFi & Bluetooth Enabled for Smart Home, Industrial Control, and Learning Projects

Description

Product Overview

The Wemos ESP32 Development Board with 18650 Battery Shield is a complete, portable IoT development platform that combines the powerful ESP32 microcontroller with an integrated battery management system. This all-in-one solution provides everything you need to build wireless, battery-powered projects without the hassle of external power supplies or complex wiring .

At the heart of this system is the ESP32-WROOM-32 module, featuring a dual-core Tensilica LX6 processor running at up to 240 MHz, 520 KB of SRAM, and 4 MB of flash memory. This powerful SoC (System on Chip) integrates both 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 (BR/EDR & BLE) , making it one of the most versatile and capable microcontrollers available for IoT applications .

The companion 18650 Battery Shield transforms this development board into a truly portable platform. Designed specifically for Wemos form factor boards, the shield accepts one or two 18650 lithium-ion batteries and provides onboard charging circuitry, voltage regulation, and power management . It delivers stable 3.3V and 5V outputs, allowing you to power not only the ESP32 itself but also external sensors, displays, and actuators—all from a rechargeable battery .

This combination is the ideal choice for a wide range of applications, including:

• Smart Home: Wireless sensors, smart plugs, environmental monitors, voice assistants

• Industrial IoT: Remote equipment monitoring, predictive maintenance, data logging

• Wearable Electronics: Health trackers, portable devices, location tags

• Educational Projects: Learning IoT, embedded systems, wireless programming

• Field Research: Remote data collection, weather stations, agricultural sensors

• Battery-Powered Prototypes: Mobile robots, drones, portable instruments

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Key Features

ESP32 Development Board

• Powerful Dual-Core Processor: Features the ESP32-WROOM-32 module with a dual-core Tensilica LX6 processor running at up to 240 MHz, providing ample processing power for complex IoT applications and real-time tasks.

• Integrated Wi-Fi & Bluetooth: Supports 2.4 GHz 802.11 b/g/n Wi-Fi and Bluetooth 4.2 (BR/EDR & BLE) , enabling seamless wireless connectivity for smart home, industrial, and wearable applications.

• Rich Peripheral Interfaces: Provides UART, SPI, I2C, I2S, PWM, 12-bit ADC, 8-bit DAC, and capacitive touch sensors, allowing connection to a wide variety of sensors, actuators, and display devices.

• Abundant Memory: Equipped with 520 KB SRAM and 4 MB flash memory , providing ample storage for firmware, web interfaces, and OTA (Over-The-Air) updates.

• Arduino Uno Form Factor (Select Models): Some Wemos ESP32 variants feature an Arduino Uno R3 compatible form factor, allowing you to use existing Arduino shields with the ESP32’s wireless capabilities.

• USB-to-Serial Interface: Integrated CH340C or CP2102 USB-to-serial converter for easy programming and debugging via a single USB cable.

• Low Power Consumption: Supports deep sleep modes with current consumption as low as 10-20 µA , making it ideal for battery-powered applications.

• Wide Operating Temperature: Rated for operation from -40°C to +85°C , suitable for demanding industrial environments and outdoor installations.

18650 Battery Shield

• 18650 Lithium-Ion Battery Support: Accepts one or two 18650 batteries (depending on shield model), providing a high-capacity, rechargeable power source for portable projects.

• Integrated Battery Charging: Features onboard charging circuitry (microUSB and/or USB Type-C) with typical charging current of 1A, allowing you to recharge batteries without removing them from the shield.

• Multiple Output Voltages: Provides both 3.3V and 5V regulated outputs for powering the ESP32 board and external peripherals:

  • 5V outputs: Up to 2.2A total (including USB-A port)

  • 3.3V outputs: Up to 1A

• USB-A Power Output: Features a standard USB Type-A port for powering external devices—effectively turning your project into a power bank.

• Battery Status Indicators: LED indicators show charging status and battery charge level (typically 25%, 50%, 75%, 100%) for easy monitoring.

• Power Switch: Includes a physical switch (K1) to toggle output power, preventing parasitic battery drain when the system is idle.

• Multiple 5V and 3.3V Headers: Provides five pairs of 5V/GND headers and five pairs of 3V/GND headers for easy connection of multiple sensors and peripherals.

• Over-Charge & Over-Discharge Protection: Built-in protection circuitry prevents battery damage from overcharging or deep discharge.

• Compatibility: Designed to work with Wemos form factor boards (D1, D32, etc.) as well as Arduino, ESP8266, STM32, and other 3.3V/5V microcontrollers.

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Technical Specifications

ESP32 Development Board

18650 Battery Shield (V8 / V3 Models)