🔋 18650 Battery Holder Development Board V3 (5V Output, Overcharge Protection) 🔋
The 18650 Battery Holder V3 is a compact power module designed to supply 5V DC output from a single 18650 Li-ion battery. It includes built-in overcharge, over-discharge, and overcurrent protection, making it ideal for powering Raspberry Pi 3B/3B+, ESP32, Arduino, and various IoT and portable electronics projects.
✅ Technical Specifications:
- Supported Battery: Single 18650 Li-ion cell.
- Input Voltage: 3.7V nominal (from battery).
- Output Voltage: 5V DC regulated.
- Max Output Current: Up to 2A.
- Protection Features: Overcharge, over-discharge, and overcurrent protection.
- Output Ports: USB-A + 5V/3.3V pin headers.
- Built-in Components: Micro USB charging port + boost converter.
- Indicator LEDs: Power and charging status.
- Compatibility: Raspberry Pi 3B/3B+, ESP32, Arduino, and IoT devices.
- Dimensions: ~90 × 25 × 25 mm.
- Approx. Weight: 35 – 45 g.
🔹 Key Features:
✔ Stable 5V output from a single 18650 battery.
✔ Integrated charging and protection circuitry.
✔ Compact, portable design for embedded and IoT systems.
✔ USB output for powering external devices.
✔ Fully compatible with Raspberry Pi and Arduino platforms.
📌 Common Applications:
- Portable Raspberry Pi power supply.
- ESP32 and Arduino IoT projects.
- DIY power banks and battery-powered devices.
- Small-scale solar and backup power systems.
- Educational electronics and embedded systems.
