1S 2S 3S 4S Single 3.7V 18650 Lithium Battery Capacity indicator Module Percent Power Level Tester LED Display Board

Description
The smart battery indicator panel, gently press the trigger switch, and the display will automatically close after 3 seconds.
Static power consumption 2-3 microamp, negligible.
Multiple battery packs are available, such as single,2,3,4, lithium battery packs.
Indicator color:25% red, other 3 green
Size:44 x 9 x 7.5 mm
Application scope
To detect the battery power, just connect the positive/negative electrode of the battery to the positive/negative electrode of the battery indicator board, and gently press the trigger switch to measure the current battery power. The total capacity of the battery is divided into 4 sections by 4 leds. The power level of the battery is known by the flick of a switch.
Power Indicator
1Series of battery power indicator
25% The first light is on (voltage around 3.4V)
50% second light (voltage 3.6V or so)
Third light (voltage 3.8V or so)
100% fourth light (voltage around 4V)
2Series of battery power indicator
25% First light on (voltage 6.6V or so)
50% second light on (voltage around 7V)
75% Third light (voltage around 7.5V)
100% fourth light (voltage around 8V)
3Series of battery power indicator
25% First light on (voltage 10.4V or so)
50% second light (voltage around 11V)
75% Third light (voltage around 11.5V)
100% fourth light (voltage 12.4V or so)
4Series 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)
Battery voltage greater than or equal to 11V, turn on the first light 25%
When the battery voltage is 11.6V or greater, turn on the second light 50%
Battery voltage greater than or equal to 12.3V, third light 75%
Battery voltage greater than or equal to 13.1V, turn on the fourth light 100 %
Package included
1 x Lithium Battery Capacity Indicator Module(1S 2S 3S 4S optional)