Headlights, And Any other application you have running (ex. Radio).
Parasytic load - clock memory, computer memory, alarm sensors
A battery is used to start a car. Once it is running, the alternator then supplies electrical energy to charge the battery as well as power the electrical systems in the car. Removing the battery while the car is running will not affect the running of the car.
No , for the battery to be charged the engine must be running . This means that your alternator , if it's functioning properly , is charging the car's battery as the engine is on/running .
You should read from 13.5 to 14 volts at the battery when the car is running.
No, that will have no effect on the battery.
It should come back after running the engine if the battery is good.
how much energy it draws from your outlet or car battery.
No, this will place a very heavy load on the alternator of the car and may result in burning out the diodes of the car charging the battery. You could easily ruin the alternator. Purchase a battery charger and charge the dead battery with that. Alternators are not made to charge dead batteries.
No , just when the engine is running
the battery job is to start the car so the alternator will kick in after the car is running
yes
If the car is on (Ignition is on, engine is running) then no. Nothing should drain the battery when the car is running, there is a device called an alternator with a belt that usually goes around the crankshaft that transforms the mechanical energy into electrical energy. As long as you have the car running, the battery should not die. If so, you have a mechanical problem.