Engineered with reverse polarity protective anddirectional input design, the module ensures safe operational while maintaining isolation between output circuits Ideal for automotive enthusiasts, electronics hobbyists, and industrial users requiring power conversion for 12V-80V battery systems in vehicles or equipment Application for power supply; Battery charging; LED drive power; Power conversion; Car power supply and battery; Charging for, MP4; Electric car; Battery car modification It is USB step down isolated power supply module.It can be used as ordinary power supply module, charging and LED constant current driver.Simple and efficient, practical It reverse connection protective and charging function