Hyper-Simple Battery Capacity Tester


Posted on Feb 6, 2014

The circuit described here is eminently suitable to indicate the capacity of a battery. We use a cheap electric clock for this. By connecting a resistor across the battery terminals, the battery is discharged somewhat faster than with the clock alone. If we pick a resistor with a value of 5. 6R, the discharge current amounts to 1. 2 V / 5. 6 R = 214


Hyper-Simple Battery Capacity Tester
Click here to download the full size of the above Circuit.

mA. If we multiply this with the number of hours that the clock ran after the battery was connected up then we know (approximately) the capacity of the battery. When discharging a NiCd battery we need to make sure we remove the battery the moment the clock stops running. NiCd batteries do not tolerate too deep a discharge very well. We therefore recommend keeping an eye on the voltage in one way or another, for example by connecting a multimeter in parallel with the resistor.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    0-50V 1A power supply with CA3086
    1Ghz Divide-By-N Counter
    Preamplifier for magnetic phono cartridges schematics
    Arduino 7 segment Displays Digital Clock With Charlieplexing LEDs
    Audio Mixer based JFET 2N3819
    2G—22W Stereo Car Audio Amplifier schematic diagram
    LEDs or Lamps Sequencer
    Tupperware Turret Airsoft Gun Circuit
    One of capacitive sensing oscillator circuit burglar alarm
    Wearable hypoxia monitoring circuit design



    Top