The product is used to measure and indicate the power of asingle lithium battery. Of course, it can also measure andindicate the power of a series of multi parallel lithiumbattery packs. lt detects the current voltage of the lithiumbattery , and then indicates the current voltage value of thelithium battery by controlling the LEDs of different numbersto be on.
Product Name: lithium battery power display panellnput voltage: DC 3v-20v
Applicable battery: single lithium battery or a series of multiparallel lithium battery pack (3.7v standard lithium battery)
The product is equipped with a key. After a short press andrelease, it starts up and displays the current power, andturns off after 5 seconds. In the shutdown state, press andhold the button for more than 2 seconds to turn on anddisplay the current power, and turn off after 5 minutes. Inthe power on state, it can be turned off directly by pressingthe key.
when measuring the battery power, connect the positiveand negative poles of the battery to the board, and pressthe key to start up to indicate the battery power.
4 Series of battery power indicator:
25% First light on (voltage 13.6v or so)
50% second light (voltage around 14.4V)
75% Third light (voltage around 15.2)
100% fourth light (voltage around 16V)
1 X 4S 18650 12V Lithium Battery Capacity Indicator Module Percent Power Level Tester LED Display Board Module