You can start a car with a dead battery without another vehicle by using a portable jump starter or by push-starting the vehicle if it has a manual transmission.
There are battery packs you can buy at an auto store or even on amazon. They're called jump starters, and they hook up to your battery. Press a button, and it puts power back into your car battery, enough to start the engine.
If your car battery dies, you have two options to try and jump start it yourself. Firstly, you can use jumper cables to jump start your car from another vehicle with a good-quality battery. The second option is charging your battery using a portable charger. You should avoid push starting your car.
Jumper Cables for a Dead Battery. Nothing can jumpstart a car faster than a set of jumper cables. These cables are inexpensive (around $20), easy to use, and with a little help from another vehicle, they can get you back on the road quickly.
Signs of a Dead Battery
Shock the battery with a high 200 amperage charger for 30-60seconds... repeat every few minutes until all cells are bubbling/de-sulfating. Put it on a 2amp charge until it is fully charged again. Won't be as good as new but you may get another year or two out of it.
If the battery seems reasonably clean, stick it to your tongue. You will feel a slight jolt and metallic taste. You'll probably need to calibrate your tongue by testing a fresh battery and a dead battery to get an idea of what to expect.
How to Jump-start a Vehicle with Jumper Cables
If you don't have jumper cables, you can jumpstart a vehicle with a dead battery via the push start method. You can also call roadside assistance for help, use a jump-start box, or use solar power. It's trickier to jump-start an automatic vehicle, but you can use a portable battery charger to get the job done.
Once up to speed, hop in, press the clutch down, shift into second gear, and quickly release the clutch. That sudden engagement should start the engine! This simple skill can save you when you're stuck without jumper cables and have a manual transmission car.
If another vehicle isn't available, a portable jump starter is a great tool to have on hand. The process is very similar: Connect the jump starter: Attach the red clamp to the positive terminal (+) of the dead battery and the black clamp to an unpainted metal surface, just as you would with another vehicle.
Most areas under the hood are metal. If two people are available to jump-start a car, one person can simply hold the ends of the jumper cables safely separated, while the other person moves between the cars and makes the proper connections. One person can safely jump-start a car, but it does require close attention.
Use a Power Bank - Charge a portable USB power bank and use it to charge your phone battery via a USB cable. Power banks can hold multiple full charges. Connect to a Laptop - If you have a charged laptop, connect your phone to it using a USB cable to transfer charge to your phone.
If your battery is completely dead, jump-starting the vehicle and letting it idle for a few minutes won't fully recharge it. Instead, after jump-starting it, drive for at least 30 minutes or until you reach your destination to partially charge the battery, then connect a battery charger to complete the recharge.
Look and listen for these early warning signs of a dead battery:
Also, touching the battery proves a danger as it may lead to electrical shock or bring the worker into contact with corrosive battery acid. 4. Practice safe and appropriate lifting procedures. Do not bring unprotected hands into contact with the battery throughout the moving process.