1. It has high precision LM3914 analog voltage detection, users can accurately know the remaining battery power.<br>2. The power display range is adjustable, and the display range can be adjusted according to the battery power.<br>3. LED power indicator light, clear at a glance.<br>4. Suitable for lithium batteries, lead-acid batteries and other batteries, widely used.<br>5. The power display tester is simple to test and easy to use.<br><br>Parameter:<br>Power consumption: bar display full brightness 42ma, single lamp display 4ma<br>Measuring range: battery in general 2.4-20v<br>Display mode: multi-light bar display or single lamp dot display<br>Size: 50x25mm<br>Tips for use(One side of Nixie tube with words is a positive plate):<br>1. Adjustment sequence is to adjust the high-end voltage first and then adjust the low-end voltage. Repeat several times for accurate display.<br>2. Lower voltage display adjustment: When connecting to the lower limit voltage, turn counterclockwise if not lit, and clockwise if lit several or all lit. Adjust it to just lit one or none lit.<br>3. Upper voltage display adjustment: When connecting to the upper limit voltage, turn clockwise if not lit or lit several, and counterclockwise if all lit. Adjust it to just lit one or all lit.<br>Note: due to different production batches, the printed characters are different, which does not affect the use.<br>Colour:As Shown<br>Material:plastic+metal<br><br>Package Contents:<br>1 * Battery Capacity Indicator Module<br><br>Only the above package content, other products are not included.<br>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.