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SirHerald t1_j1so5lp wrote

I've heard it's about 30 minutes for a good alternator running solid on the highway. 2 hours or more just driving on small roads.

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Solid-Question-3952 t1_j1sy95u wrote

Highway or small roads dont make a big difference these days with virable alternators. They will change depending on your speeds. If you are trying to charge a battery from dead, you need to put it on a charger. If its sat with the door open for a couple minutes, driving from your house to the grocery store will be fine

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SirHerald t1_j1t0ep1 wrote

It was dead the next morning. It needs a lot more than meandering for 15 minutes.

If worried, turn off all possible electrical and run the speed up. I keep a charger at home for all that though

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ForceOfAHorse t1_j1tzepl wrote

If you can start a car, drive home and next day battery is dead, your battery is just bad.

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Solid-Question-3952 t1_j1wfaag wrote

This seems to be a lost idea on this LPT. Its mind blowing how many people know so little about cars but keep speaking like the mechanics are the ones in the wrong

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