Checking the battery (Mondeo 3)

If, despite the required level of electrolyte in the battery, it creates a "sluggish" impression, use a special device to check the degree of discharge. In simple terms, this device is a glass cylinder, inside which a special correction (hydrometer) measures the density of the electrolyte. To do this, the hydrometer checks the electrolytic concentration of the sucked-in battery liquid. Of course, you can also measure the discharge level with a multimeter (reading accuracy±0.02 Volts): based on the measured value of the steady-state voltage, you can determine the discharge level of the battery.

Measuring the density of electrolyte

ORDER OF EXECUTION

Before taking measurements, leave the battery "unattended" for at least six hours. Then remove the battery cap. Hold the hydrometer vertically in the liquid and suck in enough electrolyte to make the hydrometer float freely in the cylinder. Measurement values Weight of acid (kg/l) 1,28 1,2 1,12 Battery status Fully charged Half charged Discharged Measuring the density of the electrolyte: this is possible only in batteries with serviceable sections. The density is measured in each individual section. To do this, hold the densimeter 1 vertically and suck in enough electrolyte so that the float (aeromometer 2) floats freely. In a "healthy" battery, the sections have approximately the same values. Compare them on scale 3 at the top of the aerometer.

Voltage measurement

ORDER OF EXECUTION

If the last charging process took place less than six hours ago, then turn on the low beam for about 30 seconds: this will even out any possible voltage peaks. After another 4-5 minutes of waiting, check the battery voltage. In this case, first turn off all current consumers. Measurement values Voltage (V) 12.26 and more 12,48 12,123 Battery status 100% charged 75% charged 50% charged Using a multimeter, you can quickly: measure the battery voltage. If the voltage is below 12.3 volts, you should immediately charge the battery.