yes as long as the key is off
No
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.
No
Hook it to a battery charger.
Disconnect the negative cable first when disconnecting a car battery
not at all but if you dont use your car for a while and charge you phone inside its maybe possible but after a month or so if your battery is worn
Disconnect the negative cable first when disconnecting a car battery
A good auto battery will hold it's charge for at least 6 months or longer.
To charge a car battery you need aproximatly 8000 amps To charge a car battery you need aproximatly 8000 amps
You can not charge a battery in the microwave.
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.
not possible