If your car battery is dead, you will not be able to start your vehicle without a jump using jumper cables. When the car won't start and the lights on the dash aren't working, it is most likely your battery.
Your car won't turn on.
Try start the car. Check the voltage.
You need to charge the battery with a battery charger.
If the battery is dead the alarm will not go off
If the battery will not hold a charge it more than likely has a dead cell. If the battery is over 4 years old, replace it.
No start? No turnover? No horn? No lights? Check with a voltmeter
A storm has nothing to do with the battery going dead.
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.
Your car won't start. No electrical items will work (radio, lights, power windows/locks...)
Get a donor car and use it's battery to start your car. You will need a set of quality jumper cables. Or you can charge the dead battery on the car for about 2 hours with a good 10 amp battery charger.
A completely dead battery or a bad connection to the battery.
Jump the car from another car battery or hook a charger to the battery.