The 18650 Battery Shield Module is a compact and convenient power management board designed to work with a single 18650 Li-ion battery. It provides a regulated 5V output via USB and pin headers, making it ideal for powering Arduino boards, ESP modules, sensors, and other low-power embedded systems. With onboard charging and protection support (depending on variant), it is widely used in portable and DIY electronics projects.
Core Module Features
• Battery Type Supported: Single 18650 Li-ion battery
• Output Voltage: Regulated 5V DC
• Output Interfaces: USB Type-A + pin headers
• Plug-and-Play Design: Easy battery insertion and removal
• Compact Power Shield Form Factor
Electrical & Interface
• Input Power: 18650 Li-ion battery (3.0V – 4.2V)
• Output Voltage: 5V DC (boost regulated)
• Output Current: Up to ~1A (typical, depends on battery & load)
• USB Output: Standard USB Type-A (5V)
• Pin Outputs: 5V and GND headers for direct wiring
Battery & Protection
• Battery Slot: Single 18650 holder (flat-top recommended)
• Charging Support: Via onboard micro-USB (on supported versions)
• Protection: Over-discharge / over-current protection (model dependent)
• Power Switch: Onboard slide switch for output control
Performance & Reliability
• Stable 5V Output: Suitable for microcontrollers and sensors
• Portable Power Source: Ideal for mobile and wearable projects
• Efficient Boost Conversion: Maximizes battery usage
• Simple Power Distribution: USB + header outputs available
Physical & Integration
• Shield-style compact PCB
• Clearly marked pin labels (5V, GND)
• Strong battery holder for secure fit
• Easy mounting holes for enclosure integration
Applications
• Arduino / ESP8266 / ESP32 portable projects
• Power bank style DIY builds
• Sensor nodes and IoT devices
• Robotics backup power supply
• Educational and prototyping use
Pro Tip
• Always use a good quality 18650 Li-ion battery
• Do not exceed the recommended output current
• Turn OFF the switch when not in use to save battery
• Ensure correct battery polarity before insertion
Package Includes
• 1 × 18650 Battery Shield Module (without battery)