Wemos ESP32 Development Board with 18650 Battery Shield
Wemos ESP32 Development Board with 18650 Battery Shield - Image 2
Wemos ESP32 Development Board with 18650 Battery Shield - Image 3
SKU: IOWC-1402
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Wemos ESP32 Development Board with 18650 Battery Shield

₹929.00 (Inclusive of all taxes)
Out of Stock

This Wemos ESP32 development board integrates a dual-core 240MHz processor with 2.4GHz Wi-Fi and Bluetooth, featuring a built-in 18650 lithium battery shield for portable, low-power IoT projects. It’s fully compatible with Arduino IDE, ESP-IDF, and MicroPython for wireless sensor node and smart device prototyping.

Features

  • Integrated 18650 battery shield with 1A output, overcharge/discharge protection, and 0.5A charging current for portable ESP32 applications.
  • ESP32 dual-core 240MHz SoC with 16MB Flash, 520KB SRAM, and integrated 2.4GHz Wi-Fi (802.11b/g/n) and Bluetooth 4.2.
  • Full ESP32 pin breakout provides 32 GPIOs supporting ADC, SPI, I2C, UART, PWM, and SDIO for extensive peripheral connectivity.
  • Ultra-low power design enables extended runtime; a 3000mAh 18650 battery can power the board for 17+ hours in deep sleep modes.
  • Compact form factor (91.18 x 29 x 18.6 mm) with integrated charging status LEDs and a power switch for easy embedding into products.

Out of stock

Description

The Wemos ESP32 Development Board with 18650 Battery Shield is a complete, portable IoT node solution. It combines the powerful ESP32 dual-core microcontroller with a dedicated power management circuit, allowing developers to build wireless projects untethered from a fixed power supply. The board’s integrated charging system supports simultaneous operation and charging, making it ideal for field-deployed sensors and wearable prototypes.

Architecturally, the ESP32 SoC includes built-in antenna, RF balun, power amplifier, and low-noise amplifiers, minimizing the required PCB area while delivering robust wireless connectivity. The board supports AP, STA, and AP+STA Wi-Fi modes and is programmable via Arduino IDE, ESP-IDF, or Lua, offering flexibility for both rapid prototyping and production firmware development. Its ultra-low power consumption and comprehensive sleep modes are engineered for battery longevity.

Key Features

  • Complete portable power solution with integrated 18650 lithium battery holder, charger, and 1A output regulator.
  • Robust ESP32 wireless core featuring 2.4GHz 802.11b/g/n Wi-Fi and Bluetooth 4.2 with integrated RF components.
  • Comprehensive power protection including overcharge, over-discharge, and short-circuit safeguards for the battery.
  • Full GPIO access with 32 pins broken out for ADC, DAC, touch sensors, SPI, I2C, UART, and PWM interfaces.
  • Dual-core Xtensa LX6 microprocessor running at 240MHz with 520KB SRAM and 16MB of external flash memory.
  • Dedicated user-programmable LED connected to GPIO16 and a physical power switch for system control.
  • Charging status indication via onboard LEDs (red for charging, green for full) for immediate battery monitoring.

Applications

  • Portable environmental sensors for temperature, humidity, and air quality monitoring.
  • Battery-powered smart home nodes for lighting control, security, and energy management.
  • Wearable technology and health monitoring device prototypes.
  • Remote data loggers and telemetry units for agricultural or industrial IoT.
  • Mobile Bluetooth beacons and asset tracking tags with Wi-Fi gateway connectivity.

Technical Specifications

Microcontroller / SoCEspressif ESP32 Dual-Core 240MHz
Wireless ProtocolsWi-Fi 802.11b/g/n (2.4GHz), Bluetooth 4.2 BR/EDR & BLE
Supply Voltage2.2V to 3.6VDC (via 18650 battery)
Charging Current0.5A
Output Current1A
Memory520KB SRAM, 16MB Flash
GPIO & Interfaces32 GPIO, 16x ADC, 2x SPI, 1x I2C, 1x UART, 32x PWM, SDIO (50 MHz)
AntennaIntegrated PCB Antenna
Operating Temperature-40°C to 125°C
Dimensions (L x W x H)91.18mm x 29mm x 18.6mm

Frequently Asked Questions

How do I program this Wemos ESP32 board with the battery shield?

You can program it using the Arduino IDE by installing the ESP32 board package via the Boards Manager. Select 'Wemos LOLIN32' or a Generic ESP32 Dev Module as your target. Connect via the onboard micro-USB port; the board will be powered by the connected 18650 battery if present. Ensure the battery switch is ON and use standard GPIO pins for peripherals. The board is also compatible with ESP-IDF and MicroPython for advanced development.

What is the estimated battery life with a standard 18650 cell?

Battery life depends heavily on the ESP32's operational mode. With a 3000mAh 18650 cell, the board can run for approximately 17 hours under active Wi-Fi transmission. Utilizing deep sleep modes, where the ESP32 consumes microamps, can extend operation to several weeks or months. Always measure your specific application's current draw to calculate precise runtime, considering the 1A output limit of the onboard regulator.

Can I charge the 18650 battery and run the ESP32 simultaneously?

Yes, the integrated charging circuit supports simultaneous charging and operation. When USB power is connected, the TP4056 charger module supplies up to 0.5A to the battery while the onboard regulator provides a stable 3.3V/1A output to the ESP32. The red LED indicates charging is active, and the green LED lights when the battery is fully charged. This feature is ideal for devices that need to remain online during maintenance charging.

Package Includes

  • 1 x Wemos ESP32 Development Board with 18650 Battery Shield

Additional Information

Weight 0.025 kg
Dimensions 9.118 × 2.9 × 1.86 cm

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