12V 50W 4A UPS Power Supply Module 3S Battery Charging Step-Up Protection

12V 50W 4A UPS Power Supply Module 3S Battery Charging Step-Up Protection is a specialized, high-efficiency power management solution engineered to provide uninterrupted power supplies for critical electronic systems. This robust module integrates 3S lithium battery charging, step-up boost conversion, and comprehensive protection circuitry into a compact hardware board. Consequently, it ensures seamless power transition between main AC/DC inputs and backup lithium-ion cells during grid failures. Furthermore, the intelligent charging architecture maximizes battery longevity while delivering a stable 12V output. Therefore, you can reliably deploy this UPS module in routers, access points, surveillance cameras, and DIY backup power systems.

Key Features:

• Uninterrupted Power Supply: Switches instantly to backup battery power upon mains failure to eliminate system reboots and downtime.
• 3S Lithium Compatibility: Specifically optimized for 3-series (11.1V / 12.6V) lithium-ion or lithium-polymer battery packs.
• High Power Output: Delivers up to 50W of continuous power with a maximum current rating of 4A.
• Integrated Protection: Features robust built-in safeguards against overcharge, over-discharge, over-current, and short-circuit conditions.
• Efficient Step-Up Regulation: Regulates the lower battery voltage efficiently up to a stable 12V output under load.

Technical Specifications:

• Input Voltage Range: 5V to 12V DC (depending on module variant and charging specifications)
• Output Voltage: 12V DC regulated
• Maximum Output Power: 50W
• Maximum Output Current: 4A
• Battery Configuration: 3S (3-Series) Lithium-ion / LiPo cells (≈ 11.1V nominal, 12.6V fully charged)
• Conversion Efficiency: ≥ 85% typical under standard load
• Operating Temperature Range: -10°C to +65°C

Mechanical Specifications:

• Board Material: High-grade FR-4 double-sided PCB with heavy copper traces
• Cooling Mechanism: Open-frame design with onboard thermal dissipation pads
• Terminal Type: Screw terminals / solder pads for secure power wiring
• Status Indicators: Multi-color LEDs for charging status and power output monitoring

Dimensions:

• Length: ≈ 70 mm
• Width: ≈ 45 mm
• Height: ≈ 20 mm
• Weight: ≈ 45 g

Pinout and Wiring:

• IN+: Positive input power supply connection from the main DC adapter.
• IN-: Negative common ground input connection.
• BAT+: Positive terminal connection for the 3S battery pack (±12.6V).
• BAT_MID: Intermediate balancing tap connecting between cell 1 and cell 2 / cell 2 and cell 3.
• BAT-: Negative terminal connection for the 3S battery pack.
• OUT+: Positive 12V regulated backup output to your load.
• OUT-: Common ground output connection for the load.
• Note: However, always verify correct cell polarity before applying power to prevent permanent damage to the onboard management ICs.

Datasheet Reference:

• Download Boost Converter and Power Management Reference Datasheet

Commonly Used in:

• Mini Routers & Modems: Maintaining continuous internet connectivity during unexpected power outages.
• CCTV Surveillance Systems: Powering security cameras and local digital video recorders without interruption.
• Access Control Units: Keeping biometric scanners and electronic door locks operational during grid failures.

Applications:

• DIY Smart Home Hubs: Backing up central home automation controllers and IoT gateways.
• Portable Field Instruments: Providing stable 12V power rails for field measurement and testing equipment.
• Backup Lighting Systems: Driving 12V LED emergency strips and warning illumination arrays.

Equivalent Models:

• 12V 2A Mini UPS Board: A lower-capacity alternative, although it delivers less output current for heavy loads.
• 12V 5A UPS Control Module: A higher-rated version designed for demanding industrial appliances.
• 12V Dedicated UPS Shield: A specialized expansion board with pre-mounted connectors for specific single-board computer enclosures.

Package Includes:

• 1 x 12V 50W 4A UPS Power Supply Module 3S Battery Charging Board