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

    Metal detector circuit with TDA0161
    LED Flasher with 555
    Cassette Motor Speed Calibrator
    Variable Voltage Regulator
    Police Siren Circuits with IC555 Schematic Diagram
    Rev Limiter Circuit
    555 ics hysteresis for dark activated
    water sensor alarm circuit using ic
    2011 Rife Beam Ray System
    Schmitt Inverter
    Square Wave Oscillator
    Voltage controlled sine wave oscillator
    Simple audio amplifier LM307 A741



    Top