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DIY Hobby projects, diagram, schematic

Electronic Circuits

DIY Hobby projects, diagram, schematic

Battery Charge Nominal Discharge Indicator Circuit

electronicecircuits, July 24, 2010August 16, 2023
Battery Charge Discharge Nominal indicator

12V Battery Charge Nominal Discharge (Low) Indicator Circuit

This battery level indicator circuit monitors car battery voltage. It provides an indication of nominal supply voltage as well as low or high voltage.

Battery Charge Nominal Discharge Low Indicator Circuit Diagram
PARTS LIST
R11.5kΩ
R21.5kΩ
R31kΩ
R41.5kΩ
R51.5kΩ
R610kΩ
R710kΩ
VR110kΩ Preset
VR210kΩ Preset
D1Green LED
D2Yellow LED
D3Red LED
IC1LM741
IC2LM741
741-8-pin-ic-configurations-top-view
741 PIN CONFIGURATION

VR1 and VR2 adjust the point at which the red, yellow and green LEDs are on or off. For example the red LED comes on at below 10V, and the green LED at above 12V. The yellow LED is on between these values.

Battery level indicator circuit adjustment:
Turn both presets to ground side (anticlockwise) . Then Gives 10v to this circuit using adjustable power supply and adjust VR2 to yellow led comes on. Again gives 12v to circuit and adjust VR1 to green led comes on.

12v battery charge indicatorBattery Charge Discharge Nominal indicatorCharge Discharge Nominal indicator designCar 12V battery status indicator circuit

Please send your ideas, which are very important for our success…

Electronic Circuits Battery ChargerIndicator Circuits

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Comments (13)

  1. Hyipsuccess says:
    July 31, 2010 at 2:10 pm

    nice site thanks for the link, nice monitor 🙂 great design, well not bad service will take a look closer, well not bad site, not so many programs listed but looks quite great.

    Reply
  2. Joostinaext says:
    September 23, 2010 at 6:24 pm

    The remarkable project at you, it is interesting you create a resource? If yes, at me on a site can find a lot of useful to creation of different projects. Thanks for cooperation.

    Reply
  3. XPNorman says:
    October 18, 2010 at 1:58 am

    Отличная статья! большое спасибо автору за интересный материал. Удачи в развитии!!!

    Reply
  4. Debt Settlement says:
    October 24, 2010 at 5:59 pm

    Sorry for my bad english. Thank you so much for your good post. Your post helped me in my college assignment, If you can provide me more details please email me.

    Reply
  5. pharmacy tech says:
    October 30, 2010 at 10:47 am

    Keep posting stuff like this i really like it

    Reply
  6. nomainonder says:
    January 5, 2011 at 6:33 pm

    Хороший у вас блог! удачи в развитии

    Reply
  7. emaignnet says:
    January 9, 2011 at 8:22 pm

    Entirely kindly blog, author a wonderful gentleman’s gentleman! Desing is cool!

    Reply
  8. Ggcamie says:
    January 10, 2013 at 12:08 am

    It worthfull project keep it up

    Reply
  9. Iqbal says:
    June 26, 2013 at 2:38 pm

    It is OK but there is one problem. It only show the actual Battery voltage level when battery is disconnected from Charger. When it is conected to charge then the charger voltage (like 14v) appear on circuit terminal so it will show that voltage.

    I need a circuit will show the charge status during charging(i.e the chrger connected to battery).

    Please anyone can helf me?

    Reply
  10. mike.o says:
    September 1, 2013 at 4:59 pm

    What is value of vr1andvr2. And their function

    Reply
  11. fratie says:
    October 28, 2013 at 12:28 am

    Over 15.5 volts is degraded battery supravoltata green lights but will be red, but how? Thank you!

    Reply
  12. fratie says:
    October 28, 2013 at 12:58 am

    How modify, green and red indicate as above 15.5 volts battery voltage is considered too high

    Reply
  13. manoy says:
    November 23, 2014 at 8:59 am

    How did you come up with those values of R1 up to R5?

    Reply

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