Batteries are delivered to spare parts without electrolyte in a dry-charged version. To bring such a battery into working condition, unscrew the plugs and remove the seals from them or cut off the ventilation protrusions. Then, with a small jet through a funnel, electrolyte is poured into the battery with a density (reduced to 25°C) 1.27-1.29 g/cm3 for regions with a temperate climate silt 1.22-1.24 g/cm3 for the tropics. Battery recovery operations must be carried out at ambient temperature (25±10) °C.
The battery is kept for 20 minutes so that the plates and separators are saturated with electrolyte. Then check the voltage of the battery without load and the density of the electrolyte.
If the battery voltage is at least 12.5 V, then it is ready for operation. If the voltage is less than 12.5 V, but more than 10.5 V, the battery must be recharged to the voltage specified by the manufacturer. At a voltage less than or equal to 10.5, the battery is rejected.
It is imperative to charge the battery after filling the electrolyte if it has been stored for more than 12 months from the date of manufacture or if the initial operation of the battery will take place in difficult conditions: in cold weather, with frequent engine starts, etc.
As a result of impregnation of separators and plates, the electrolyte level in the battery will inevitably decrease. Therefore, before installing the battery on the car, bring the level to normal by adding electrolyte of the same density as at the beginning of the filling.