Description
The 18650 Lithium Battery Shield V8 / V9 Mobile Power Expansion Board is a versatile, high-capacity portable power supply module designed for Arduino, ESP32, ESP8266, and general DIY electronics. Engineered to hold up to four 18650 lithium-ion cells, this expansion board functions as 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 an onboard power switch and voltage-switching controls, a Micro-USB port for recharging the internal cells at up to 800mA, and high conversion efficiency (~95%) to maximize battery runtime.
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. Products may ship from different brands/batches randomly according to availability. 18650 batteries and connection cables are not included.
Key Features
- Dual Voltage Outputs: Supports both a high-current 5V (3A rated, up to 3.6V/3.6A max support) output and a secondary 3V (1A) output.
- Multi-Cell 18650 Capacity: Designed to accommodate up to four 18650 lithium-ion batteries in parallel/series configuration for extended 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 600mA to 800mA charging current.
- Onboard Control Switch: Features a physical ON-OFF button and voltage switching controls for convenient power management.
- High Conversion Efficiency: Optimized switching circuitry delivers up to 95% power conversion efficiency.
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 power-hungry 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 high-capacity multi-cell 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 4 x 18650 Lithium Battery Shield V8 / V9 Mobile Power Expansion Board
- 1 x Instruction Manual / Quick Guide
Specifications
| Parameter | Specification |
|---|---|
| Item Type | Mobile Power Expansion Board / 18650 Battery Shield (V8 / V9 Series) |
| Battery Compatibility | Up to Four 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) |
| Power Conversion Efficiency | ~95% High Efficiency |
| Safety Protections | Overcurrent | Overvoltage | Under-Voltage Protection IC |
| Physical Dimensions (Length × Width × Height) | 100 mm × 96 mm × 20 mm |
| Net Weight / Shipping Weight | 65 g / 0.071 kg |
| Shipping Dimensions | 15 cm × 14 cm × 1 cm |
