How Long Do You Need To Charge A Car Battery. The answer is YES yes the car battery does charge while the engine is idling. Again I encourage you to watch the video above this answer will make more sense.
How long to Charge a Car Battery at 40 Amps. A 40 amp charger can charge a 50 discharged small car battery 200-315 CCA or RC 40-60 in about 45 minutes a mid-sized battery 315-550 CCA or RC 60-85 in 1 hour or a large battery 550-1000 CCA or RC 85-190. On average a car battery lasts from 5 to 7 years.
As other answers have suggested you cant put an exact figure on this because of the amount of variables involved.
Again assuming that the battery can still hold a charge. Get into the habit of double checking that you turned everything off before you leave the vehicle. Battery charging times can vary from make and model and can differ depending on the batteries amps and charger that youre using. If your car battery is dead use a standard 4-8 amp charger to fully recharge it.
