Car is off, meaning, the engine is turned off.
If it's not a hybrid, then it can in two ways
1 From another car... hook up the lines + and -
2 From a charging station, usually they plug in a wall socket, 110v/220v to 12v, and in a couple of hours, PRESTO, your battery is charged.
You can start a car without a battery if you hook up a jump pack or use jumper camples but it could fry your alternator. It is pointless to charge a car without a battery. When you charge the car you are charging the battery.
Some car battery charges will not charge a completely dead battery. You need to find a type of battery charger that is designed to charge a completely dead battery. You can get around this by hooking a car with a working battery up to the dead battery with jumper cables. The alternator/charging system of the car with the good battery will charge the dead battery. Leave them connected for about 30 min, then disconnect and try to use the battery charger again. If it still won't charge, hook it up to the car with the good battery for a longer period of time.
it should because car is running off alternator and if you do this it will not charge battery back up
Yes
older cars had a generator ,not an alternator, but you can always use a battery charger to charge a battery
A jump box will only partially charge the battery. You need a charger to fully charge the battery.
Yes, it is charged all the time on the car by the alternator. Just hook the battery charger up and charge it. Just make sure to connect the cable correctly. Additional answer If the battery's flat and you want to charge it without removing it from the car (a common occurrence), just connect it to a charger.
hybrid cars can charge up by battery and fill up with gas.
If you charge the battery up and it will run and start for a while and then dies again you know its not getting charged. If you charge the battery up or jump it off and it is dead again the first time you cut it back off its a bad battery.
You could try and hook up a bicycle workout machine to a battery so when you work out in the morning, you charge the battery. Then put the battery in an electric car.
Just hook up the charger to the battery while it is still in the car and do not unhook it.
You can't recharge it hooked up in reverse. You will destroy the battery or the charger if you try it.