Turn off the engine and all electrical accessories
Wear gloves and safety glasses
Check the battery type and condition
Inspect the battery terminals for corrosion or looseness
Clean the terminals if needed
Use a compatible car battery charger
Connect the charger clamps correctly
Set the charger to the proper voltage and charging mode
Plug in and turn on the charger
Let the battery charge until full
Monitor the charging process periodically
Turn off and unplug the charger when done
Remove the clamps in the correct order
Reconnect and secure the battery if needed
Start the car and verify proper operation