Hyundai- battery runs down while I drive

[lion9car]

You almost certainly have an issue with the serpentine belt or something directly connected to it, as that’s the only common link between your charging system and your power steering system. Most likely the belt is worn out or your tensioner isn’t making the belt tight enough. Do you ever hear any squealing noises, especially on wet days? It’s hard to believe two different shops would overlook this, though.