4 Way 18650 Battery Shield Module 5V 3V USB C Charger Arduino ESP32

🔧 4 Way 18650 Battery Shield USB-C Power Module | AuscomTech

This 4 way 18650 battery shield is a higher-capacity portable power module designed for electronics projects needing extended battery runtime.

It provides 3V and 5V output rails, USB 5V output, multiple labelled output pads, onboard LEDs, Micro USB input, and Type-C input.

Typical use includes Arduino, ESP32, ESP8266, wireless systems, mobile prototypes, and larger battery-powered DIY electronics builds.

⭐ Key Features

• Four Battery Holder – supports 4 × 18650 lithium cells for extended runtime applications
• Dual Voltage Output – provides 3V and 5V rails for project flexibility
• USB 5V Output – onboard Type-A USB connector for compatible 5V loads
• Micro USB and Type-C Input – supports two common charging connector types
• NORMAL / HOLD Switch – output mode switch for controlling board operation
• Status LEDs – onboard LED indicators for operating and charging feedback
• Multiple Output Pads – labelled 3V, 5V and GND pads for connecting modules and sensors
• Extended Portable Power – suitable for larger embedded builds and longer-running prototypes

📊 Technical Specifications

• Product Type: 4 way 18650 lithium battery shield module
• Battery Slots: 4 × 18650 cells
• Charging Inputs: Micro USB, Type-C
• Output Rails: 3V and 5V
• USB Output: Type-A USB 5V output
• Output Pads: labelled 3V, 5V and GND pads
• Indicators: LED1, LED2, LED3, LED4
• Switch Modes: NORMAL / HOLD
• Button: onboard push button
• Approx. Board Size: 100 × 91mm
• Compatible Boards: Arduino, ESP32, ESP8266 and similar low-voltage electronics

🧩 Typical Applications

• Extended-runtime Arduino power projects
• ESP32 and ESP8266 battery systems
• Portable wireless sensor networks
• DIY power bank style electronics
• Robotics and automation modules
• Mobile prototype power supplies

📦 Package Includes

• 1 × 4 Way 18650 Battery Shield USB-C Power Module

🔗 Recommended Accessories (Not Included)

• 4 × matched 18650 lithium batteries – required power source
• USB Type-C cable – charging connection
• Dupont jumper wires – output pad wiring
• Arduino, ESP32 or ESP8266 board – typical powered device

⚠️ Important Safety & Warranty Notes

• 18650 batteries are not included.
• This is an exposed electronics module, not an enclosed consumer power bank.
• Battery polarity must be checked before use. Install all four cells exactly according to the + and – markings on the PCB and holders.
• Incorrect installation can cause immediate failure. A reversed cell may rapidly overheat and burn the IC/components on the underside of the board.
• Short circuits can cause fire or injury. Do not allow battery terminals, output pads, USB contacts, loose wires, screws, tools, or conductive items to bridge together.
• Use matched rechargeable 18650 cells of the same type, capacity, age, condition, and charge level.
• Do not mix old and new cells, different brands, capacities, or charge states.
• Use only on a non-conductive surface and inspect for damaged battery wraps, loose wire strands, solder bridges, or debris before powering.
• Do not leave unattended during first use or charging. Test away from flammable materials.
• Stop immediately if heat, smoke, smell, discoloration, swelling, or melting occurs.
• Do not connect Micro USB and Type-C charging inputs at the same time unless confirmed by the module documentation.
• Burnt, melted, fire-damaged, overheated, or visibly damaged modules are not covered by warranty where caused by reverse polarity, short circuit, incorrect wiring, overload, damaged batteries, mixed batteries, or user installation error.
• A burnt IC or heat-damaged underside is treated as a clear sign of incorrect installation, short circuit, overload, or misuse.
• Lithium batteries can be hazardous if misused and may cause burns, fire, personal injury, or property damage.