HW 357 Adjustable Step Up Module 3.7V to 9V 5V 2A Boost Converter for 18650 Lithium Battery

Specification:

• Model: HW-357 Adjustable Step-Up Power Module
• Input Voltage: 3.7V to 5V DC
• Output Voltage: Adjustable 5V to 9V DC
• Output Current: Up to 2A max
• Conversion Type: DC-DC boost converter circuit
• Efficiency: Up to 95% energy conversion efficiency
• Protection: Overcurrent and short-circuit protection
• Indicator: Built-in LED power status light
• Material: High-quality PCB with copper trace design
• Dimensions: Approx. 36mm × 15mm × 8mm

Description:
The HW-357 adjustable step-up module is a compact and efficient DC-DC converter designed to boost low voltage sources like a 3.7V 18650 lithium battery to stable 5V or 9V outputs. It delivers up to 2A of current, making it suitable for powering microcontrollers, DIY electronics, and USB-powered devices. Built with high-efficiency circuitry and protection features, it ensures safe operation and long-lasting reliability. Its lightweight PCB design with onboard LED indicator makes it an excellent choice for portable power projects.