Description
The 2 x 18650 Lithium Battery Shield V8 Mobile Power Expansion Board is a compact and efficient portable power supply module designed specifically for Arduino, ESP32, ESP8266, and general microcontroller projects. Engineered to hold up to two 18650 lithium-ion cells, this expansion board transforms your spare batteries into a complete mobile power bank, featuring dual voltage outputs (5V at 3A and 3.0V at 1A) accessible via standard USB ports and breakout headers.
Equipped with an integrated lithium battery protection IC, the module provides robust safeguards against overcurrent, overvoltage, and deep under-voltage discharge. It features a Micro-USB port for recharging the internal cells at 600mA to 800mA, high power conversion efficiency, and clear polarity markings to ensure safe operation.
Note: Pay strict attention to battery polarity during installation; clear positive and negative markings are printed on the board, and incorrect insertion will permanently burn the module. Product design may vary slightly based on manufacturing batches. 18650 batteries and connection cables are not included.
Key Features
- Dual Voltage Outputs: Supports both a high-current 5V (3A rated, max support up to 3.6A) output and a secondary 3V (1A) output rail.
- Dual 18650 Cell Capacity: Designed to accommodate up to two 18650 lithium-ion batteries in parallel for reliable portable power storage.
- Integrated Battery Protection IC: Built-in hardware safeguards protect against overcurrent, overvoltage, and low under-voltage conditions (normal working voltage 3.2V–4.2V).
- Micro-USB Recharging Port: Onboard Micro-USB input charges the installed 18650 cells at a regulated charging current of 600mA to 800mA.
- Compact Mobile Footprint: Measures 50 mm in width with a 20 mm height profile, making it ideal for tight project enclosures.
Benefits
- All-in-One Power Solution: Combines battery holding, step-up power conversion, charging circuitry, and multi-voltage outputs onto a single compact board.
- Ideal for Microcontroller Projects: Provides reliable 5V and 3V rails to power wireless boards like ESP32, ESP8266, and Arduino setups untethered.
- Enhanced Operational Safety: Multi-layer hardware protections shield your batteries and connected electronics from common power faults.
- Portable Prototyping Hub: Transform spare 18650 cells into a robust, rechargeable field power bank for custom maker builds and robotics.
Applications
- Arduino & ESP32/ESP8266 Portable Rigs: Autonomous mobile power supply for Wi-Fi/Bluetooth IoT nodes and microcontroller projects.
- DIY Portable Power Banks: Custom compact power banks for charging mobile gadgets and field electronics.
- Robotics & Mobile Hardware: Independent dual-voltage power source (5V and 3V) for motorized chassis, sensors, and logic boards.
- Field Instruments & Data Loggers: Extended-runtime power supply for remote monitoring stations and portable test gear.
Package Includes
- 1 x 2 x 18650 Lithium Battery Shield V8 Mobile Power Expansion Board Module
- 1 x Instruction Manual / Quick Guide
Specifications
| Parameter | Specification |
|---|---|
| Item Type | 2-Cell 18650 Mobile Power Expansion Board / Battery Shield (V8 Series) |
| Battery Compatibility | Up to Two 18650 Lithium-Ion Cells (Working Voltage: 3.2V – 4.2V) |
| Output Voltages & Current Ratings | 5V DC (3A Rated, Max support up to 3.6A) & 3V DC (1.0A Rated) |
| Output Interfaces | Standard USB Ports & Pin Expansion Headers |
| Input / Charging Port | Micro-USB Port (Charging Current: 600mA – 800mA) |
| Safety Protections | Overcurrent | Overvoltage | Under-Voltage Protection IC |
| Physical Dimensions (Width × Height) | 50 mm Width × 20 mm Height |
| Net Weight / Shipping Weight | 38 g / 0.042 kg |
| Shipping Dimensions | 10 cm × 8 cm × 1 cm |
