5A DC to DC CC CV Lithium Battery Step down Charging Board Led Power Converter module XL4015
Three in one:
(1) Use as an ordinary step-down module with over-current protection capability;
(2) Used as a charger for various voltage values of lithium batteries, batteries,
nickel-cadmium nickel-metal hydride batteries (battery pack), used in solar panels,
wind turbines and other occasions;
(3) Use as a high-power LED constant current drive module