Every 10,000 km mileage, as well as in the case of more frequent cases of unreliable starting of the engine, check the degree of charge of the battery by measuring the density of the electrolyte with a hydrometer. At the factory, cars are equipped with batteries with an electrolyte density of 1.280 (for the tropics - 1,230). Depending on the climatic region in which the car is operated, the density of the electrolyte must correspond to the data in table 5. If the electrolyte temperature does not correspond to 25°C, then use table 6 of the amendments to the hydrometer reading. If the battery is discharged by more than 25% in winter or 50% in summer, remove it from the car and charge it.
If the vehicle is not used for up to one month, disconnect the negative cable from the battery («to ground»). Do not leave the wire clamp on the surface of the battery. If the vehicle is not used for a longer period of time, remove the battery from the vehicle, fully charge it and store it in a cool, dry place if possible. The minimum storage temperature should not be lower than minus 50°C. During storage, check the electrolyte density every 12 months and recharge the battery if necessary. It is unacceptable to store the battery in a discharged state, as this will lead to sulfation of the plates and a complete loss of battery performance.
Every 20,000 km run, clean the clips and terminals of the battery with sandpaper and lubricate them with a thin layer of VTV-1 auto-lubricant in an aerosol package.