How Long Can I Charge My Car Battery. You would have to allow your car to idle for possibly several hours to completely charge your battery. So a 2 amp charger will deliver 2 amp per hour to this flat battery and if it requires 48 amps that in means it needs 24 hours to fully charge.
Mid-sized car batteries can be charged in 31 hours at 2 amps or 6 hours at 10 amps. When using a cars alternator to charge your battery it cannot fully charge your cars battery even if you drive for a few hours. There are many electrical systems in your car all vying for a little bit of power from the alternator.
Make sure you charge the battery for at least 18 hours using the enclosed Power Wheels 12 volt charger before operating your vehicle for the first time.
However always be prepared to leave the charger on overnight in case it takes longer than expected. There are a couple of things that are good for you to know while charging a car battery these are. 12 to 24 hours 10 Amp charger. There are many electrical systems in your car all vying for a little bit of power from the alternator.
