5V Step Up Lithium Battery Charging Protection Board USB

 is a compact and efficient power management module designed to safely charge, protect, and supply power from single-cell lithium-ion (Li-ion) or lithium-polymer (Li-Po) batteries. This all-in-one board integrates a USB-based battery charging circuit, a comprehensive protection system, and a step-up (boost) converter, making it an ideal solution for portable and battery-powered electronic projects. It accepts a standard 5V USB input to charge the battery while providing built-in protection against over-charging, over-discharging, and short circuits, ensuring safe and reliable battery operation. The integrated boost converter generates a stable 5V output from the battery, allowing it to power external devices such as microcontrollers, sensors, and small modules even when the battery voltage drops below 5V. Its high efficiency minimizes power loss and extends battery life, while the lightweight and durable PCB design allows easy integration into compact enclosures. With LED indicators on supported models for charging and status monitoring, this board is widely used in DIY electronics, IoT devices, power banks, and other portable applications where reliable battery management and a regulated 5V output are required.