Does A Car Battery Recharge Itself While Driving. Fast speed generates more RPM. The answer is YES yes the car battery does charge while the engine is idling.
They do this by overworking working the engine to generate the additional power to recharge the battery but this is a very inefficient way to drive a PHEV as the mpg will plummet as the engine works hard to generate the extra power. Its an ingenious system that converts kinetic energy into electrical energy which is transferred and stored in the cars battery. A car battery cannot recharge itself.
In general you should drive around for at least 30 minutes after jumping your car to make sure you get a good charge.
The reason for calling them self-charging is because you dont need to plug into the mains instead the battery tops up while driving. Electricity makes the motor spin and turn the wheels bringing the car up to speed. Now if you mean if you can fully recharge a car battery by putting it on charge overnight then yes if the charger has sufficient output and is voltage controlled so as not to overcharge the battery. The reason for calling them self-charging is because you dont need to plug into the mains instead the battery tops up while driving.
