How Long To Charge A Car Battery By Driving. Generally it will take 2 to 4 hours to fully charge a car battery with a 20 Amp battery charger and 12 to 24 hours with a 4 Amp charger. You will need a minimum of 1000 RPM to generate enough extra power for your battery.
How Long Should You Drive After Jumping A Car Optima Batteries. How Long Does It Take to Charge a Dead Car Battery. The time it takes is up to the size of your battery and how many amperes your battery is charging with.
It takes nearly 1 hour to charge your battery while driving fully.
Avoid using a heater a stereo system lights or an electrical device when driving and charging your car battery. If driving on a highway the battery will take 30 minutes to charge and if driving in the city it will take an hour or more. Later the battery returns to low even though the engine has been running for a long time. On the other hand if the charging is tickling it may take around 24 hours to charge a dead battery completely.
