• Dual display power + voltage, up 8 color bars display battery power, downstream (display battery voltage)
• It can be used in a wide range of applications, such as 18650 , polymer pack, - battery, electric vehicle battery, - battery, etc.
• Usage: Connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube displays the battery power (do not the positive and negative electrodes, otherwise it will be directly damaged )
• Working current: 5-15ma, the lower the battery voltage, the smaller the current.
• 8-band power resolution: 10% 25% 40% 50% 60% 75% 90% 100%. More voltage calculation, the same principle as the electric vehicle' display.

1Pcs Digital (4 Pack)