LDTR-WG0181 4-Digit 5A LED Drive Lithium Battery Charger with Voltmeter Ammeter DC to DC Module (Blue)

Features
1. Input voltage range: 5-36V DC
2. Output voltage range: 1.25-32V DC adjustable
3. Output current: 0-5A
4. Output power: 75W
5. High efficiency up to 96%
6. Built in thermal shutdown function
7. Built in current limit function
8. Built in output short protection function
9. Input reverse polarity protection: None (if required, high current diode in series with the input).

Use as a step-down modules with overcurrent protection
1. Adjust the right button so that OUT LED lighted, Digital meter shows the value of output voltage ,adjust the voltage potentiometer so that the output voltage reaches the value you want.
2. Adjust the right button so that Digital meter shows the value of output current;Wire shorted output terminal, then adjust the current potentiometer so that the output current reaches a predetermined overcurrent protection value. (For example, the Digital meter displays the current value of 4A, then you can use the module to a maximum current of 4A)
3. Connected to the load.

Use as a battery charger
1. Make sure you need to charge the battery float voltage and charging current; (if lithium parameters 3.7V/2200mAh, then the float voltage is 4.2V, the maximum charging current 1C, ie 2200mA)
2. Under no-load conditions, adjust the "Voltage potentiometer" so that the output voltage reaches the float voltage; (if to 3.7V rechargeable lithium battery, the output voltage can be adjusted to 4.2V)
3. Adjust the right button so that Digital meter shows the value of output current;Wire shorted output terminal, then adjust the "current potentiometer" so that the output current reaches a predetermined Charging current value.
4. Charge turn lamp current factory default is 0.1 times the charging current; (Battery during charging current is gradually reduced, if the charge current setting is 1A, then when the charge current is less than 0.1A, blue lights turned off, the green