You will need
  • fresh electrolyte;
  • water;
  • - hydrometer;
  • charger;
  • - additive;
  • - enema;
  • - pipette.
Rinse the battery with distilled water before replacing the electrolyte. Don't be afraid to shake him or turn over. Spend it until until washed coal baby. Empty your garbage. Next, you need to eliminate the salt deposits on the plates to perform replacement of the electrolyte in the battery.
Pour in battery electrolyte nominal density (it is 1.28 g/cm3). Add additives, based on the volume of the battery. Then wait until the electrolyte squeeze the air out of sections, and the additive is dissolved. This process will take about 48 hours. Dissolution of the additive in the electrolyte can be completed before pouring it into the battery, if it is a good solvent.
Plug your charger, not forgetting before that to remove the tube. Drive battery in a "Charging-discharge", until it is restored to normal capacity. Set charge current of about 0.1 A, watch the terminal voltage. Do not allow the electrolyte to boil or heat. If necessary, reduce the current. Charge it until the terminal voltage will be 2.4 V at each section.
Reduce the charging current by half, continue charging. If within two hours of tension and the density does not change, stop the process. Next, bring the electrolyte density to the nominal with distilled water or by adding another electrolyte.
Drain battery, use a current of 0.5 a until the voltage drops to 1.7 V. If you dvenadtsatiletny battery, then this value will be 10.2 V, for the six – 5,1. From the time of discharge and the amount of current compute capacity. If it is lower than 4 amp/hours, then repeat the charge cycle and add the electrolyte additive. Close the hole. The replacement of the electrolyte is completed.