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Home > DIY Module > Function DIY > LM3914 Green LED Bar Display Module 10 Segments Battery Power Indicator Battery Capacity Indicating Tester DIY Kits

LM3914 Green LED Bar Display Module 10 Segments Battery Power Indicator Battery Capacity Indicating Tester DIY Kits

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Product Introduction:
1.Power Consumption:all lamps on 42mA;single lamp on 4mA
2.Measurement Range:universal 2.4-20V batteries
3.Color: Green
4.Display Way:multi-lamp bar display or single lamp dot display
5.PCB Size:45*14mm
6.Adaptive for lithium batteries,lead acid batteries and other batteries which need
 display electricitiy quantity.
7.Power display adjustable;support single lithium battery 1S-4S (4.2V-16.8V);
 lead acid battery 6-12V;Ni-MH 3.6-18V;nickel-cadmuum battery 3.6-18V.
8.Display Way Introduction:display battery upper/lower limit voltage,and it can be
  divided into 10 gears;every lamp on represents display 10%;10 lamps on represents
  display 0-100%;and it can be also changed into single lamp display,that means only
  one lamp is on.

Lithium Battery:
After single lithium battery discharges,its voltage is 3V,when fully charged,it is 4.2 V
1S-->3V (the first lamp) to 4.2V (the tenth lamp)
2S-->6V (the first lamp) to 8.4V (the tenth lamp)
3S-->9V (the first lamp) to 12.6V (the tenth lamp)
4S-->12V (the first lamp) to 16.8V (the tenth lamp)
other parallel voltage so on

Lead Acid Battery:
Lead acid battery usually is 6V or 12V battery
6V-->4.8V (the first lamp) to 6.75V (the tenth lamp)
12V-->9.6V (the first lamp) to 13.5V (the tenth lamp)

Adjustment Way:
Necessary Equipment:adjustable stabilivolt power;screwdriver
Take single lithium battery 3.7V as example,3V is undervoltage low port;4.2V is full power high port
1.Adjust adjustable power to voltage high port 4.2V,then connect with this board;and there may be
  2 results:not on or all on or several on;then adjust 503 potentiometer slowly until LED is all on;
  if it is not on or several on,please counter clockwise adjust;if all on,please clockwise adjust.
2.Adjust adjustable power to voltage low port 3V,then adjust 502 potentiometer until there is a lED on;
  if it is no on,please adjust it clockwise;if there is all on or several on,please adjust it counter clockwise.

If there is no high-precise adjustable power,then charge the battery to full power that is high port voltage;
when the battery discharges completely that is low port voltage;connect with the board and adjust.

Notice:
1.Please operate according to above instructions;first adjust high port then adjust low port.
2.Red wire connects with positive,black wire connects with negative.Please don't connect it reversely;
  the maximum limit voltage is 20V,please use anti-static bonding pad.

Finished Product Picture:

Tested by ICStation's Outstanding Partner learnelectronics:



Learn More Details in the Video:

Feedback

By
Rating: [5] 5 of 5 Stars! Date Added: 2017-07-10 21:17:42
Fits the description completely. Collected-everything works. Thank you seller.

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LM3914 Green LED Bar Display Module 10 Segments Battery Power Indicator Battery Capacity Indicating Tester DIY Kits
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