4 x 18650 Lithium Battery Shield Power Expansion Board

Quad 18650 Cell Capacity: Holds up to four 18650 lithium-ion batteries in parallel, offering maximum energy storage and extended runtime for high-drain portable electronics.

Dual Output Power Rails (5V & 3.3V): Features onboard high-efficiency step-up boost regulators delivering steady 5V (up to 3A) and 3.3V (up to 1A) DC power rails across multiple pin headers.

USB Charging & Output Options: Equipped with Micro-USB and Type-C input ports for battery charging, plus standard USB-A output ports to power external devices like phones or development boards.

Comprehensive Circuit Protection: Onboard protection IC guards against overcharging, overdischarging, short circuits, and overcurrent conditions to ensure safe operation.

Hardware Power Switch & Status LEDs: Integrated physical toggle switch controls power output, while onboard LED indicators display real-time charge and power status.

Standard 0.1" (2.54mm) Pin Headers: Breakout pin headers allow seamless connection to microcontrollers such as Arduino, ESP32, and Raspberry Pi via standard jumper cables.

Housing & PCB Style: Heavy-duty FR-4 glass epoxy PCB with four integrated spring-loaded 18650 cell sockets.

Contact & Terminal Style: Nickel-plated spring contacts and standard 2.54mm male header output pins.

Technical Specifications:

Supported Cells: 4 x 18650 Rechargeable Li-Ion (Unprotected cells recommended).

Input Charging: 5V DC via Micro-USB / Type-C.

Output Voltages: 5V DC (up to 3A max) and 3.3V DC (up to 1A max).

Color: Black PCB with white silkscreen markings and black battery holders.

Usage Advice: Always observe correct battery polarity (+ and -) printed on the PCB when inserting cells to avoid short-circuiting or damaging the module.

Maintenance: Keep board contacts clean and dry. Store in an anti-static pouch when not integrated into an active project.

Essential Portable Powerhouse: Position as an ideal, high-capacity power solution for mobile robotics, field-deployed IoT gateways, Raspberry Pi projects, and high-drain DIY power banks.

Highlight Multi-Cell & Multi-Voltage Output: Emphasize the quad 18650 capacity and simultaneous 5V and 3.3V outputs for powering both processing units and peripheral sensors at once.

Recommended Cross-Sell Add-ons: Pair with 2 x 18650 Lithium Battery Shield Power Expansion Board, ESP32S Wemos 18650 Battery Charge Board, TP4056 1A lithium charging module Type-C, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Battery Charger Module collection page under multi-cell battery expansion shields.