A battery is a device that stores energy in a chemical form and makes it possible to use it as electricity due to the interaction of two different metals in an acidic solution (electrolyte). Replacing the electrolyte will help you restore the old battery.
Necessary
- - fresh electrolyte;
- - water;
- - hydrometer;
- - Charger;
- - additive;
- - enema;
- - pipette.
Instructions
Step 1
Rinse the battery with distilled water before changing the electrolyte. Don't be afraid to shake it or turn it over. Do this until the charcoal is washed out. Shake out the debris. Next, it is necessary to eliminate salt deposits on the plates in order to replace the electrolyte in the battery.
Step 2
Fill the battery with electrolyte of nominal density (it is 1.28 g / cm3). Add additives based on the volume of the battery. Then wait until the electrolyte squeezes air out of the sections and the additive dissolves. This process will take about 48 hours. The dissolution of the additive in the electrolyte can be done before pouring it into the battery if it dissolves well.
Step 3
Connect the charger, remembering to remove the plugs first. Run the battery in a charge-discharge pattern until normal capacity is restored. Set the charging current to about 0.1 A, watch the voltage at the terminals. Do not bring electrolyte to a boil or heat. Reduce current if necessary. Charge it until the voltage across the terminals is 2.4V on each section.
Step 4
Reduce the charging current by half, continue charging. If the voltage and density do not change within two hours, stop the process. Next, bring the density of the electrolyte to the nominal with distilled water or adding another electrolyte.
Step 5
Discharge the battery, use a current of 0.5 A until the voltage drops to 1.7 V. If you have a twelve-volt battery, then this value will be 10, 2 V, for six - 5, 1. From the discharge time and current value, calculate the capacity … If it is lower than 4 amperes / hour, then repeat the charge cycle and add an additive to the electrolyte. Close its holes. This completes the electrolyte replacement.
