DC 5V Type-C 18650 Lithium Battery Charger and Booster Converter Board

DC 5V Type-C 18650 Lithium Battery Charger and Booster Converter Board is an ultra-slim uninterruptible power supply (UPS) charge-and-boost module designed to keep 5V security cameras, IoT gateways, and microcontrollers running seamlessly during mains power outages. Accepting 5V DC input via a USB Type-C port or solder pads, it charges an external 3.7V 18650 lithium-ion battery while simultaneously supplying a regulated 5V DC output with zero-delay automatic battery switchover.

Key Features:

• Zero-Restart UPS Switchover: Automatically transitions to 3.7V lithium battery power the instant external 5V AC/USB power fails, preventing camera or microcontroller reboots.
• Ultra-Narrow Strip Form Factor (73.5 × 10.5mm): Slim profile slips directly inside tubular camera housings, junction boxes, or alongside an 18650 cell.
• USB Type-C Power Input: Connects directly to any standard 5V USB Type-C power adapter for simultaneous load powering and battery charging.
• Pass-Through Load Sharing: Powers the 5V load directly from the input supply while independently managing CC/CV charging of the 3.7V 18650 cell.
• Complete Battery Protection: Built-in overcharge, over-discharge, overcurrent, and short-circuit protection safeguards the lithium cell for unattended 24/7 operation.

Technical Specifications:

• Input Supply Voltage: 5.0V DC (via USB Type-C Receptacle or Input Pads)
• Compatible Battery: 1S 3.7V (4.2V Full) 18650 Lithium-Ion or LiPo Pack (Single Cell or Parallel Pack — Not Included)
• Regulated Output Voltage: 5.0V DC ± 2%
• Continuous Output Current: 1.0A to 1.5A Max (5W–7.5W)
• UPS Switchover Time: 0 ms (Seamless Instantaneous Transition)
• Operating Temperature Range: -20°C to +70°C

Mechanical Specifications:

• PCB Material: High-Density Double-Sided FR-4 Fiberglass Strip PCB
• Input Interface: Onboard USB Type-C Female Port
• Battery & Output Terminals: Annotated B+/B- and OUT+/OUT- Solder Pads

Dimensions:

• Length: 73.5 mm
• Width: 10.5 mm
• Height: 6.0 mm
• Weight: ~5 g

Pinout and Wiring:

• USB Type-C Port (IN): Connect 5V DC mains USB adapter for continuous operation and charging.
• B+ / B- Pads: Solder to the positive (+) and negative (-) terminals of a 3.7V 18650 lithium-ion cell or parallel pack (observe polarity strictly).
• OUT+ / OUT- (UPS Output): Connect to the 5V DC power input of your Wi-Fi CCTV camera, Raspberry Pi Pico, or ESP32 hub.

Datasheet Reference:

• Architecture: Synchronous Power-Path Charger + 5V Step-Up Boost Converter IC

Commonly Used in:

• 5V Wi-Fi IP Security Cameras (Xiaomi, TP-Link Tapo, EZVIZ)
• Uninterruptible 5V Power Supplies for ESP32 / Home Assistant Gateways
• Biometric Attendance Terminals & Smart Doorbells
• Solar-Assisted 5V Remote Telemetry Nodes

Applications:

• Converts any standard 5V USB security camera into a battery-backed CCTV unit that keeps recording during power cuts.
• Allows users to scale backup runtime from 4 hours to 24+ hours simply by connecting additional 18650 cells in parallel.
• Replaces expensive commercial mini-UPS bricks with a compact 73.5mm × 10.5mm internal PCB.

Equivalent Models:

• LX-LBC3.1 Charging and Discharging 5V 3A Integrated Module Type-C: Higher-current 5V 3A charge/boost board.
• HW-357 Step-Up 18650 Li-Ion Power Bank Charger Module Type-C: Adjustable 4.3V–27V output charger-boost combo module.

Package Includes:

• 1 × DC 5V Type-C 18650 Lithium Battery Charger and Booster Converter Board