1-Cell Lithium Battery Power Indicator 4V
Connect the positive and negative terminals of the display board and connect them to the positive and negative terminals of the tested battery. The digital display shows the real-time battery power shown by the indicated bars.
Power parameters:
1S lithium battery is about 4.2V when fully charged
One power bar gets illuminated for every increment of 3.3V and if it is less than 3.3V, the power indicator is entirely off, indicating that the battery is lower than 3.3V, and the battery needs to be charged.
WARNING
