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Simple circuit for Battery Status indication for 7.4v re-chargable bat

  1. Jan 31, 2014 #1

    I need to get an LED indication for

    full battery and

    low battery

    the circuit must be simple with components such as transistors,resistors..etc

    Battery Details: 7.4v 1500mah li-on
  2. jcsd
  3. Feb 1, 2014 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    Hint: zener diodes.
  4. Feb 1, 2014 #3


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    Gold Member

    I'd look at the lm3914.

    Overkill, but very accurate cheap and simple.
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