Protection and reliability Protection features include anti burning input protection, input overcurrent protection, input undervoltage protection, output anti backflow protection, and constant voltage and constant current regulation. It can be connected directly to a charger. Designed to prevent damage during charging and operation, while maintaining stable CV/CC performance. Low voltage and compatibility Supports 2V low voltage input, providing reliable operation even from low sources. Especially suitable for 18650 power booster applications. power capability Input current limit up to 15 A. Output current up to 4 A. At 3.7 V input, output power can reach 45 W. At 12 V input, output power can reach 80 W. Flexible power supply Functions as a power supply for your electronic equipment. Output value can be set according to your system voltage. Use scenarios Scenario 1: power a drain 18650 booster or charging system while benefiting from CV/CC protection. Scenario 2: serve as a bench power supply for testing and development with adjustable output to match your system voltage. Scenario 3: provide a stable, protected power source for devices that operate at 3.7 V or 12 V input, with configurable output to suit the load.