Accelerated battery discharge during vehicle operation
Alternator drive belt slipping - Adjust belt tension.
Alternator failure - Check alternator.
Damage to the insulation in the electrical system (discharge current more than 1 mA with disconnected consumers) - Locate the current leakage and repair the damage.
Short circuit between plates - Replace battery.
Connection of current consumers not provided for by the design in excess of permissible limits - Disconnect new consumers.
Contamination of the electrolyte with foreign impurities - Drain the electrolyte, rinse and charge the battery.
Excessive contamination of the battery surface - Clean the battery.
Electrolyte level below the top edge of the plates - Restore normal electrolyte level.
The appearance of electrolyte on the surface of the battery
Elevated electrolyte level leading to sloshing - Adjust electrolyte level to normal.
Electrolyte leaking through cracks in case - Replace battery.
«Boiling» electrolyte due to overvoltage in the alternator - Replace the voltage regulator in the alternator.
«Boiling» electrolyte due to sulfitation of the plates — Replace the battery.