LM2596 CC/CV Li-Ion Charger/LED Power Supply Module

Instructions for CC/CV Battery Charging:

1. Verify the voltage and current of the cell you plan on charging.  Do not guess if you do not know the exact specifications.  Do not use without a reliable multi-meter.
2. Adjust CV voltage. Using your multi-meter to read the output voltage, adjust the voltage potentiometer until it is at your desired charge end voltage.
3. Adjust charge indicator lamp point (not necessary to adjust for proper function).  To adjust it, using your multi-meter in current measurement mode, adjust the CC current potentiometer until it reads approximately 0.1 times your desired charge current (i.e. if your CC charge current is going to be 1A, adjust the CC current to 0.1A).  Now, with the multi-meter leads still hooked up, adjust the charge lamp potentiometer until it is right on the edge of being lit up.  This is a good rough starting point.
4. Adjust CC current. Using your multi-meter now on DC current measurement mode, adjust the potentiometer until it is at your desired maximum charge current.
5. Monitor cell throughout charging process to verify that everything is working as expected.  If cells feel hot to the touch, terminate charging immediately!  Do not leave charging cells unattended.