hey guys i just started working with the LM2596 DC-DC step down.
I thought of using it to charge my lithium ion batteries two of them combined each 3.7v 2200mah. Is is safe to use the step down motor to charge it and will be make sure the current flows only in one direction and not the other way. (I will need the stepdown motor to reduce the voltage of one of my charger with has a voltage output of 12V) And I don't have a working board to charge it even though i am aware that it is very cheap, i want to charge it with the things laying around my house.
Thanks in advance.