Checking the density of the electrolyte using a densimeter. Density is measured in kg/dm3
1. Measurement can only be taken if at least 6 hours have passed since the last charge.
2. Remove all plugs on the battery cells.
3. Immerse the densimeter vertically into the battery cell. Draw enough electrolyte into the densimeter so that the float of the densimeter floats freely in the electrolyte. The higher the density of the electrolyte, the higher the float floats. On the densimeter scale, you can determine the density of the electrolyte in kg per cubic decimeter (liter).
4. Compare the measured value with the values given in the table.
5. In areas with a normal climate, the density of the electrolyte must be at least 1.24 kg / l (kg/dm3). In addition, the density of the electrolyte in individual battery cells should not differ by more than 0.03 kg/l. If the electrolyte density is low, charge the battery. After charging, check the density again.
6. If the ratings are met, screw in the plugs. Use only branded plugs for the respective battery, the plugs must be screwed in with O-rings. If the nominal values are not reached, replace the battery.
Electrolyte density in kg/dm3 and battery state of charge
Degree of charge | charged | half empty | discharged |
In a zone with a normal climate | 1,28 | 1,20 | 1.12 |
In a tropical climate zone | 1,23 | 1,16 | 1,08 |
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