How Long Does It Take To Charge A Car Battery While Driving Guide 2022. Keep in mind that 30 minutes is an average. Yet one of the most common questions is that, what charger should one use when charging a car battery, 2 amp or 10 amp?.
Charging time for a bmw x5. The best way to maintain a long life for your car battery is by recharging it slowly. A car with an idling engine will still recharge your battery, but at a much lower rate than if you were driving.