Ultra-Small 3.7V Type-C Li-Ion Battery Charging Board Module
Ultra-Small 3.7V Type-C Li-Ion Battery Charging Board Module
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Short Product Description
Short Product Description
Space is the ultimate luxury in modern electronics design. Meet theUltra-Small 3.7V Type-C Li-Ion Battery Charging Board—a tiny powerhouse measuring just 10 x 7.5 x 5.2mm. Designed specifically for smart wearables, micro-drones, and IoT devices, this module delivers a reliable600mA chargewith pinpoint 4.2V accuracy. Stop compromising on your compact builds. Whether you're upgrading an electric mosquito swatter or hiding a charger inside a standard cable head, this board ensures safe, efficient, and continuous power management without the bulk.
Key Features
Key Features
- Ultra-Compact Footprint: Measures just 10x7.5x5.2mm, allowing seamless integration into the tightest enclosures and micro-devices.
- Precision 4.2V Charging: Delivers highly accurate (±1%) voltage to safely maximize your lithium battery's capacity and overall lifespan.
- Thermal Regulation System: Utilizes CC/CV modes with thermal adjustment to prevent overheating during 600mA fast charges.
- Smart Trickle Charging: Features a 2.8V threshold to safely and gently revive deeply discharged batteries back to optimal health.
- Automatic Re-Charging: Continuously monitors battery state and automatically tops up power, ensuring your devices are always ready for action.
- Current Monitoring Output: Built-in charging current monitoring supports advanced power tracking for complex engineering projects.
Full Product Description
Full Product Description
Revolutionize Your Compact Electronics Projects
When building micro-electronics, every millimeter counts. Our Mini 3.7V Type-C Charging Board is engineered to solve the most common problem for DIY makers and IoT engineers: fitting robust power management into impossibly tight spaces. Its minimalist design allows it to be tucked away effortlessly, giving your creative technology products the soul of efficient battery life.
The Ultimate Space-Saving Power Solution
Forget bulky charging modules that dictate your product's enclosure size. This ultra-small Li-ion charging pad is so compact it can easily be embedded directly inside a standard Type-C charging cable head. It's the perfect hidden power solution for smart rings, micro-drones, and discreet IoT sensors.
Advanced Thermal & Voltage Protection
Safety and speed go hand-in-hand. Utilizing a Constant Current / Constant Voltage (CC/CV) charging mode, this module maximizes the charging rate up to 600mA while actively preventing overheating through built-in thermal adjustment. Your lithium batteries are charged swiftly and safely, every single time.
Smart Battery Health Management
Extend the lifespan of your lithium cells. Featuring a highly accurate 4.2V (±1%) charging voltage limit, it prevents overcharging degradation. Furthermore, if a battery drops to a critically low voltage, the board's 2.8V trickle charge threshold kicks in, safely reviving the depleted cell back to a healthy state before applying full current.
Technical Specifications
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Mini Li-ion Battery Charging Board Module |
| Input Interface | Type-C USB |
| Charging Current | 600mA |
| Charging Voltage | DC 4.2V (±1% accuracy) |
| Trickle Charge Threshold | 2.8V |
| Charging Mode | Constant Current (CC) / Constant Voltage (CV) |
| Dimensions | 10 mm x 7.5 mm x 5.2 mm |
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
- Can I use this board to charge 18650 lithium batteries?Yes! As long as it is a 3.7V lithium-ion battery, this board will work perfectly. However, please note that the maximum charging current is 600mA, so larger capacity batteries like 18650s will take longer to reach a full charge compared to micro-batteries.
- Does the module heat up during continuous charging?The board features a smart thermal adjustment system. If the temperature rises during the 600mA constant current phase, the module will automatically regulate the output to prevent overheating, ensuring both the board and your battery remain safe.
- What happens if I leave my device plugged in for days?The board supports an automatic re-charging function. Once the battery hits 4.2V, it stops charging. If the battery naturally depletes over time while still plugged in, the board will automatically top it back up to keep it in the best state.
Target Users / Applications
Target Users / Applications
- DIY Electronics Hobbyists: Upgrading electric mosquito swatters, custom flashlights, or miniature robotics.
- IoT Device Engineers: Powering compact smart home sensors and remote data nodes.
- Wearable Tech Designers: Integrating power into smart rings, fitness trackers, or heated clothing.
- Micro-Drone Builders: Managing lightweight LiPo batteries in tight drone canopies.
