My battery died and I suspect the alternator. To test I need to get the car running again and so borrowed a wall socket charger.
I have no idea how long I need to let the battery charge for.
Would anyone know how long I need to wait?
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How long does it take to charge a battery? Ideally assuming 100% percent efficiency a 10 A battery charger would charge a 50 A/h (Ampere/hour) battery in about 5 hours.
Hours of charge = Ampere-Hour rating/charge rate ....ideally
In reality due the fact that when a battery is charging the charge rate is not constant. As a battery over time becomes charged the charging rate decreases. In reality it ends up being about twice the ideal calculated value.
Using the values used in the example above...10 hours would be expected.