Product Description
The 134N3P Module is a highly integrated Power Management IC (PMIC) solution. It features a Micro-USB port for charging the connected lithium battery and a USB Type-A port for discharging power to external devices. The board includes a status LED that indicates the charging state (typically red for charging and green/blue for fully charged). Its internal protection logic prevents the battery from overcharging, over-discharging, and short-circuiting, making it a safe choice for beginner-level power projects.
Key Features
Triple Functionality: Combines charging, boosting, and protection on one miniature PCB, reducing the need for multiple separate modules.
Smart Charging: Automatically manages the charging cycle for 3.7V lithium batteries, ensuring long-term battery health.
Automatic Load Detection: The module intelligently wakes up when a device is plugged into the USB-A port and enters a low-power standby mode when no load is detected.
Integrated Protection: Safeguards your battery against discharging below 2.9V, which is critical for preventing permanent damage to Li-ion cells.
Compact DIY Design: Its small size makes it easy to fit into 3D-printed enclosures for custom portable chargers or "Jugaad" power banks.
