With key off function, and reduce power consumption
Input and output voltages can be displayed alternately
Power state can be freely defined
The input has the function of reverse connection protection, and even if the wrong connection, it will not burn out. (MOS tube reverse connection protection circuit)
Output voltage mode: Boot default display it, LED indicator off
Input voltage mode: Press button switch to it, LED indicator on
Alternating mode: Press button again input/output voltage alternately display (3s). Press button again, switch to output voltage display
LED voltmeter stop working mode(the mode is still working): keep pressing the button until the monitor does not display numbers ( long press more than 4s) and release the button. LED lights shuts down. At this time, it does not perform memory function. Click the button, the LED voltmeter starts working again.
3.7 V to 5 V / 2 A 82.5% efficiency
5 V to 12 v / 2 A 88.4% efficiency
7.4 V to 12 V / 2 A 90.2% efficiency
12V to 18 v/ 2 A 93.6% efficiency
18V to 24 v / 2 A 95.3% efficiency
24V to 30 v 2 A 97.1% efficiency
Conclusion: the higher the input voltage is more efficient. Close the voltmeter boost module will get higher work efficiency.
1 x LTC1871 boost Power module