Mini Router UPS Board 40W V2.6

Mini Router UPS Board 40W V2.6 is an all-in-one power supply, battery charger, and uninterrupted power supply (UPS) controller module designed specifically to keep Wi-Fi routers, Optical Network Units (ONUs), and IP security cameras running seamlessly during mains power outages. Built using surface-mount technology (SMD) for high efficiency and compact integration, this board prevents router resets and reconnection delays by providing zero-transfer-time switching when switching between grid power and a 3S lithium battery pack. Equipped with multi-voltage outputs (5V, 9V, and 12V DC), onboard battery percentage LEDs, and multi-tier circuit protection, it serves as the ultimate DIY solution for building reliable mini UPS units for homes and offices.

Features

• Zero-delay automatic switching preventing router rebooting or dropouts during electricity outages
• Multi-voltage output ports providing concurrent 12V, 9V, and 5V DC rails for simultaneous powering of routers, ONUs, and mobile devices
• Integrated 3S lithium-ion/LiPo battery charger with high-precision voltage regulation ($\pm0.05$ output voltage tolerance)
• Onboard LED capacity meter displaying battery charge level in 4 stages (25%, 50%, 75%, and 100%)
• Comprehensive circuit safety features including short-circuit, over-voltage, reverse polarity, output over-voltage, and surge/thunder protection
• High output efficiency (up to 99% accuracy) delivered via an all-SMD component layout
• Capable of driving combined power loads up to 40W (maximum peak load handling up to 47.5W)
• Compact form factor with clearly marked input, output, and battery terminal pads for easy assembly

Applications

• DIY Uninterruptible Power Supplies (UPS) for Wi-Fi routers, fiber optic ONUs, and broadband modems
• Continuous backup power systems for IP security cameras, CCTV DVRs, and attendance machines
• Portable 5V/9V/12V DC power banks for outdoor electronic setups, field test gear, and IoT gateways
• Polytechnic diploma, university engineering thesis, and custom electronics power enclosure projects

Important Notes:

• Battery Setup Requirement: This board is designed strictly for a 3S Lithium Battery System (three 3.7V 18650 cells in series, nominal 11.1V, full charge 12.6V). Do not connect 1S, 2S, or non-lithium battery chemistries.
• Input Adapter Selection: Use a high-quality 12.6V to 13.0V DC power adapter rated for at least 3A to 5A to ensure sufficient current for simultaneously powering your devices and recharging the battery pack.
• BMS Integration: While the board features low-voltage discharge protection, using a dedicated 3S BMS on your 18650 battery pack is recommended for individual cell balancing and additional overcurrent protection.
• Current Budgeting: Ensure the total power consumption of all connected devices across the 5V, 9V, and 12V ports does not exceed the overall 40W continuous power threshold.

Package includes

• 1 x Mini Router UPS Board 40W V2.6