- charger;
- hydrometer.
Warning: When servicing the battery, it is necessary to follow safety precautions.
Sequence of charging
1. Remove the battery from the car or disconnect the wire terminals from the battery terminals.
2. Before starting charging, unscrew the battery caps.
3. Connect the charger to the battery terminals, observing the polarity, and only then plug the charger into the power grid. The charging current should not exceed 10% of the battery capacity in amperes, i.e. the maximum charging current is 5.5 A.
Note: Many chargers automatically maintain the charging current and do not have a regulator to change it.
4. Charge the battery. We control the battery charging process by measuring the density of the electrolyte. The charging time of a completely discharged battery is at least ten hours at a charging current of 5.5 A.
The article is copied from the website: VAZbook
Recommendation: If the electrolyte starts to "boil" in some battery banks, the charging current should be reduced to 2.5-3 A (on some automatic chargers, you need to switch a special switch to do this).
5. Stop charging the battery after all of its cells begin to release gas: first, disconnect the charger from the power supply, and only then disconnect the wires from the battery terminals.
Helpful advice. If the charger has a current regulator, then to equalize the density of the electrolyte in all the banks of the battery, you can recharge the battery for several hours with a small current (1-2.5 A), without allowing the electrolyte to "boil". Charging the battery should be completed after the density of the electrolyte in all the banks has stopped changing for two hours.