Lithium Ion 1-Cell Battery Holder Shield V3

The Lithium-Ion 1-Cell Battery Holder Shield V3 is a compact, efficient, and safe power supply module designed to hold a single 18650 lithium-ion cell and deliver regulated output voltages of 3V and 5V. Ideal for powering Arduino boards, ESP32/ESP8266 modules, sensors, and portable devices, this shield transforms a single cell into a stable and convenient power source for a wide range of electronics applications.

Equipped with dual voltage outputs (3V/1A and 5V/2.4A), the module ensures a clean and consistent power supply. It integrates a built-in protection IC that safeguards the battery against overcharging, over-discharging, overcurrent, and short circuits—making it a reliable choice for both DIY enthusiasts and professional engineers.

Its intelligent LED indicators and manual on/off functionality add convenience, while the 4-level battery status lights provide clear feedback on the remaining battery power at a glance.

Features:

• Dual Output Voltages: Provides stable 3V (1A) and 5V (2.4A) regulated outputs suitable for microcontrollers, displays, and wireless modules.
• Single 18650 Lithium-Ion Cell Support: Converts a single rechargeable cell into a versatile mobile power source.
• Built-in Lithium Battery Protection IC: Offers protection against overvoltage, undervoltage, overcurrent, and short circuits to extend battery life and ensure safety.
• 4-Level Battery Indicator LEDs: Displays real-time battery charge status, allowing easy monitoring of power levels.
• Charging Status Indicator:
  • Red LED – Charging
  • Green LED – Fully Charged
• Manual On/Off Control: The module powers up automatically on connection; you can manually shut it down if needed.
• High-Efficiency Voltage Regulation: Delivers consistent voltage output even under varying load conditions.
• Compact and Sturdy Design: Lightweight and easy to integrate into various portable electronic projects.

Applications:

• Arduino and ESP-based projects
• Portable IoT and sensor nodes
• DIY mobile power banks
• Robotics and small electronics systems
• Educational electronics and prototyping projects

Specifications:

• Model: V3 Lithium-Ion 1-Cell Battery Holder Shield
• Input: 1 × 18650 Lithium-Ion Cell
• Output 1: 3V / 1A
• Output 2: 5V / 2.4A
• Battery Protection: Overcharge, Over-discharge, Overcurrent, Overvoltage
• Power Display: 4-level LED indicator
• Charging Indicator: Red (Charging) / Green (Full)
• Default Mode: Always ON (manual shutdown or modifiable auto shutdown)
• Material: ABS + PCB
• Dimensions: Approx. 90mm × 25mm × 20mm

Shield Image and Layout

View the shield layout and connector placement for easy integration into your project:

Why choose the 1x 18650 Battery Holder Shield V3

This battery holder shield balances convenience, safety, and compatibility. With its built-in charger and dual regulated outputs, it removes the need for separate power modules and simplifies portable deployments. Whether you are powering an Arduino project, an ESP32 IoT node, or a wearable prototype, the 1x 18650 Lithium Ion Battery Holder Shield V3 offers a reliable power platform optimized for makers and professionals.