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

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

This 2 way 18650 battery shield is a portable lithium power module designed for projects requiring longer runtime than a single-cell board.

It provides 3V and 5V output rails, USB 5V output, onboard status LEDs, Micro USB input, and Type-C input for convenient charging connection options.

Typical use includes Arduino, ESP32, ESP8266, portable electronics, sensor systems, and embedded DIY power applications.

⭐ Key Features

• Dual Battery Holder – supports 2 × 18650 lithium cells for increased project runtime
• 3V and 5V Outputs – suitable for low-voltage electronics, modules, and development boards
• USB 5V Output – onboard Type-A USB port for powering compatible 5V devices
• Micro USB and Type-C Input – two charging input connector options on the board
• Output Control Switch – NORMAL / HOLD switch for board output control
• LED Indicators – onboard LEDs show operating and charge status
• Multiple Output Pads – several labelled 3V, 5V and GND pads for easy wiring
• Portable Electronics Ready – useful for battery-powered prototypes and mobile projects

📊 Technical Specifications

• Product Type: 2 way 18650 lithium battery shield module
• Battery Slots: 2 × 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 × 48mm
• Compatible Boards: Arduino, ESP32, ESP8266 and similar low-voltage electronics

🧩 Typical Applications

• Longer-runtime Arduino projects
• ESP32 and ESP8266 wireless builds
• Portable sensor systems
• DIY USB power output projects
• Robotics and mobile electronics
• Battery-powered prototype circuits

📦 Package Includes

• 1 × 2 Way 18650 Battery Shield USB-C Power Module

🔗 Recommended Accessories (Not Included)

• 2 × 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 both 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.