ESP32S Wemos 18650 Battery Charge Board

Integrated ESP32-WROOM-32 Module: Features a dual-core 32-bit MCU running up to 240MHz with built-in Wi-Fi and Bluetooth BLE for powerful IoT processing.

Onboard 18650 Battery Socket: Integrated single-cell 18650 holder allows direct power delivery, making wireless sensor nodes completely portable.

Integrated Battery Charging & Protection: Built-in linear charger IC and protection circuitry allow safe cell charging via Micro-USB/Type-C with overcharge and overdischarge protection.

Multi-Voltage Power Headers: Provides regulated 5V and 3.3V power breakout pins to easily supply external sensors, displays, and relay modules.

Onboard Power Switch & Charging LEDs: Includes a physical power toggle switch to extend battery standby time and dual LED indicators for real-time charge status.

Full GPIO Breakout Access: Standard header pinouts give access to ESP32 GPIO pins, ADC channels, SPI, I2C, and UART peripherals for fast prototyping.

Housing & PCB Style: Compact FR-4 glass epoxy PCB with an onboard spring-loaded 18650 battery holder.

Contact & Terminal Style: Gold/nickel-plated header breakout pins and spring cell contacts.

Technical Specifications:

Microcontroller: ESP32-WROOM-32 (Wi-Fi + Bluetooth BLE).

Compatible Battery: 1 x 3.7V 18650 Li-Ion cell (Unprotected recommended).

Input Voltage: 5V DC via USB.

Output Voltages: 5V DC and 3.3V DC breakout rails.

Color: Black PCB with white component silkscreen and black holder.

Usage Advice: Pay strict attention to battery polarity (+ and -) printed on the PCB prior to cell insertion to prevent component damage.

Maintenance: Keep board contacts dry and free of solder bridging. Store in anti-static packaging when not in active use.

Essential All-in-One IoT Development Node: Position as an indispensable development board for remote Wi-Fi environmental monitors, smart home sensors, BLE beacons, and portable robotics projects.

Highlight Built-in Battery Base & Wireless Connectivity: Emphasize the convenience of combining processing power, Wi-Fi/Bluetooth capabilities, and onboard battery charging onto a single board without needing external power shields.

Recommended Cross-Sell Add-ons: Pair with 2 x 18650 Lithium Battery Shield Power Expansion Board, TP4056 1A lithium charging module Type-C, TP5410 5V 1A LiPo Charger & Boost Converter, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Battery Charger Module collection page under integrated MCU battery shields.