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DC-DC Step Down Adjustable Voltage & Constant Current Driver/Battery Charger:
Category: 1004036121 - Battery
Specifications:
Input Voltage: 5-35 V
Output Current: Adjustable constant current 150Ma -3A Max. (Use a Heat sink when at 3A for better heat dissipation)
Output Voltage: Continuously adjustable from 1.25 V to 30V
Size: (L x W x H): 4.8 x 2.4 x 1.3cm 
Indicator Light:
Constant Current: Indicator (red)
Charging: Indicator (red)
Charged Full: Indicator (green)
Applications:
High-power LED constant current drive 
Lithium battery charger (including ferroelectric) 
4V, 6V, 12V, 14V, 24V battery charger 
Nickel cadmium, nickel metal hydride battery pack charger 
Solar panels and wind turbines 
Battery Use:
Make sure of the voltage and current of the battery you need to charge 
Adjust the constant voltage potentiometer to make the output voltage same to the charge voltage 
Potentiometer Adjustment Direction:
 Clockwise (increase), counterclockwise (decrease) 
Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to make sure the output current to the expected charging current value 
The charge current of transfer lamp is default 0.1 times of the charging current (constant current value) 
Connected to the battery and try to charging (for previous 5 steps, module input terminal is connected to power source, output load is NOT connected to batteries)
LED Constant Current Driver Use:
Make sure operating current and Max operating Voltage of the LED you need to drive 
Adjust the constant voltage potentiometer to make sure the output Voltage is up to LED Max operating Voltage 
Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to make sure the output current to the expected LED operating current 
Join LED, test (For the above 3 steps, module input terminal is connected to power source, output load is NOT connected to LED) 
LM2596 DC-DC StepDown Adjustable Power Supply Module 


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