Item name:Li-po Battery Indicator
Operating voltage: 7.4V
Power display:As the picture show
Type: 7.4V 2S
Applicable :7.4V NiMH /Polymer lithium battery/Electric car battery/other Electric equipment
Instructions:Connect the positive and negative terminals of the display board to the positive and negative terminals of the battery .Digital tube will show real-time battery power .

Displays the battery power parameters:(N is the quantity of battery cells)
Battery voltage is more than NX3.3V  (1 unit power will be bright)
Battery voltage is more than NX3.5V  (2 unit power will be bright)
Battery voltage is more than NX3.7V  (3 unit power will be bright)
Battery voltage is more than NX3.9V  (4 unit power will be bright)