15W Type-C 18650 Battery UPS Booster Board 5V 9V 12V

Type-C UPS-15W 3A Lithium Battery Step-Up Power Supply Converter Module

The UPS-15W Type-C Lithium Battery Step-Up UPS Power Module is an all-in-one DC power backup solution engineered for continuous, zero-delay power delivery. Designed for electronic hobbyists, DIY makers, and students in Bangladesh working on science projects, this compact module integrates lithium battery charging, over-discharge/over-charge protection, high-efficiency DC-DC boost conversion, and uninterrupted power supply (UPS) switching onto a single circuit board. When external 5V power via the Type-C USB port is active, the module directly powers the connected load while simultaneously charging a connected 3.7V 18650 lithium battery. If the primary power source disconnects or fails, the onboard circuit seamlessly transitions to battery power with zero latency, ensuring uninterrupted operation for sensitive electronics.

This module comes in distinct fixed-output voltage variants—5V, 9V, and 12V DC. Users can select the exact voltage variant suited for their project needs, whether powering a 5V microcontroller, a 9V sensor suite, or a 12V DC router. Available through Biggan Project for electronics builders across BD, the UPS-15W eliminates the need for complex, discrete battery management and boost regulator setups, serving as a reliable backbone for portable and emergency electronic applications.

Specifications

Features

• Seamless UPS Switching: Instantaneous, zero-delay transition between external 5V power and battery power during power cuts.
• Integrated Charger & Booster: Combines battery management, protective circuitry, and high-current MOS boost regulation on one board.
• High Efficiency: Features a boost converter design delivering up to 96% energy conversion efficiency.
• Type-C USB Input: Standardized modern input port for convenient power delivery using modern phone chargers and cables.
• Dual-Color LED Status Indicator: Onboard LED indicates charging state and full-charge status clearly.
• Comprehensive Protection: Automatically cuts off power under short-circuit, over-current, or extreme discharge events to safeguard lithium cells.
• Integrated Battery Holder: Built-in 18650 battery slot on the back for neat, compact project assemblies.

Applications / Use Cases

• WiFi Router Backup: Powers 9V or 12V internet routers uninterrupted during localized load shedding in BD.
• Microcontroller & Robotics Projects: Provides steady 5V or 12V power to Arduino, ESP32, or Raspberry Pi setups for DIY makers at Biggan Project.
• Security Systems & Cameras: Supplies backup power to standalone IP cameras, access control locks, and alarm systems.
• Portable Instrumentation: Ideal for field equipment, handheld meters, and standalone data logging stations.
• Emergency Lighting: Acts as an automated driver and backup circuit for emergency DC LED lamps.

User Guide / How to Use

• Select Correct Variant: Confirm your load requires 5V, 9V, or 12V, and select the corresponding UPS-15W module version.
• Battery Installation: Insert a high-quality 3.7V 18650 lithium battery into the onboard holder, paying strict attention to correct polarity (+ / -).
• Connect Load: Solder or connect your DC device to the positive and negative output pads on the module.
• Power Input: Connect a 5V DC power source capable of supplying sufficient current (at least 5V/3A recommended) via the Type-C port.
• Energy Saving Tip: Once testing is complete, desoldering the output indicator LED can save over 10mA of idle power draw.
• Protection Reset: If the module enters protection mode due to a short circuit, connect a 5V Type-C charger to re-activate output.

Frequently Asked Questions (FAQs)

• Q: Can one single module output 5V, 9V, and 12V simultaneously?
  A: No. The UPS-15W module comes in specific, pre-configured voltage variants (5V, 9V, or 12V). You must choose the module matching your target device voltage.
• Q: What happens when the main power cuts off?
  A: The module switches instantly to battery power without any power disruption or delay, keeping connected devices running smoothly.
• Q: Can I add more batteries to increase backup time?
  A: Yes, you can connect multiple 3.7V lithium cells in parallel to increase capacity without affecting the output voltage.
• Q: Why does the module not output power after a short circuit?
  A: The onboard protection IC locks the circuit to prevent battery damage. Plug a 5V power source into the Type-C port to reset and restore output.

Challenges and Considerations

• Power Supply Requirements: The 5V input power source must deliver enough current (3A recommended) to simultaneously run the load and charge the battery.
• Thermal Management: Operating continuously near the peak 15W load limit generates heat; ensure adequate ventilation around the board.
• Input Power Discharge Slowdown: External power adapters with large output capacitors may cause a slow voltage drop when unplugged, slightly delaying UPS triggering. Adding a 1K discharge resistor in parallel across the 5V input solves this.
• Strict Polarity: Reversing battery polarity during installation can permanently damage the booster and protection ICs.

Compatibility

• Batteries: Compatible with all standard 3.7V (4.2V fully charged) 18650 rechargeable Lithium-Ion and LiPo cells.
• Input Devices: Compatible with standard 5V USB Type-C wall adapters, power banks, and DC step-down supplies.
• Loads: Compatible with 5V, 9V, or 12V DC equipment under 15W continuous rating (5V up to 3A, 9V up to 1.6A, 12V up to 1.2A).

Future Enhancement Options

• Parallel Battery Packs: Extend total operational runtime by wiring external multi-cell 18650 parallel banks to the battery pads.
• Enclosure Integration: Mount inside custom 3D-printed project boxes for clean, commercial-grade portable power packs.
• External Toggle Switches: Add an inline switch between the output pad and load for manual power control without removing the battery.

Benefits

• Zero Latency: Eliminates unexpected device reboots during power outages.
• Compact All-in-One Design: Reduces wiring clutter by integrating charging, boosting, and switching functions on one PCB.
• High Reliability: Built-in multi-layer protection guards expensive electronics against over-current and voltage spikes.
• Easy Availability in BD: Conveniently sourced locally through Biggan Project for fast project prototyping.

Conclusion

The UPS-15W Type-C Lithium Battery Step-Up UPS Module is a powerful, highly efficient solution for maintaining continuous DC power. With its seamless UPS power switching, robust protection features, and high boost efficiency, it provides makers, students, and engineers across Bangladesh with a dependable foundation for uninterrupted electronics projects, router backups, and custom DIY setups.

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