Checking the density of the electrolyte (Mazda Capella GC)

The specific gravity of the battery electrolyte changes with temperature. An increase in the temperature of the electrolyte leads to a decrease in its density, and conversely, a decrease in temperature leads to an increase in its density.

The specific gravity of a fully charged battery should be between 1.260 and 1.280 g/cm³ at an electrolyte temperature of 26.7°C. The measured specific gravity should be corrected by adding 4 points (0.004) for every 5.56°C if the temperature is above 26.7°C, or by subtracting 4 points for every 5.56°C if the temperature is below 26.7°C.

You should never measure the density immediately after adding water. The water and electrolyte must be mixed either by charging for several minutes at a low charging current or by leaving the battery for 1 hour.

Caution! A difference in specific gravity of 50 points (0.050) or more between one or more battery cells indicates that the battery is faulty and must be replaced.

(Article is available on the website: Mazbook.ru)