How long should it take for the battery to recharge when the engine runs after it has gone dead from leaving an interior light on?
2 Answers
An hour should give it enough power to start again.
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Alternators are not designed to recharge a severely discharged battery. They are designed to maintain the battery charge. The alternator can be damaged. (expensive) At the end of the day place the battery on a charger overnight. Newer chargers will automatically turn off when the battery reaches its peak charge.
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