Execution order
1. Turn off the ignition and all electrical consumers.
2. Disconnect the wires from the battery terminals. The negative wire should be disconnected first and reconnected last.
3. Remove the battery from the vehicle.
Warning: If the battery case is damaged, remove the battery wearing rubber gloves to protect your skin from the electrolyte.
4. Check the battery mounting elements as they may be damaged by electrolyte spilled on them. If necessary, clean them with a warm soda solution.
5. Clean the top of the battery with the same solution.
6. Inspect the battery for cracks. If there are cracks, replace the battery.
7. Clean the battery terminals.
8. Clean the inside surface of the wire clamps connected to the battery terminals.
9. Install the battery into the vehicle.
10. Connect the wires to the battery terminals.
11. Tighten the wire clamps securely to the battery terminals.
12. Apply a thin layer of petroleum jelly to the battery terminals.
[The text is taken from an online source: HYUNDAIBOOK.ru]