Is it possible to jump start a car in the rain?

Everybody has to deal with a dead battery in their car at one point or another. However, there are certain conditions that can make it difficult to jump a vehicle. Another issue is jumping start a car during bad weather. You can jump start your car even in rain.

We discuss whether or not you can jump start your car while it's raining. Also, we will show you how to safely jump-start your vehicle. 

Índice de Contenido
  1. Is it possible to jump start a car in rain?
  2. There are dangers in jumping start a car
  3. Preventive Tips: Jump Starting in Rain
  4. How to jump start a car in rain
    1. 1. Turn Off Electronics
    2. 2. Park Other Vehicles Nearby
    3. 3. Protective Hood
    4. 4. Use jumper cables to attach
    5. 5. Get started with cars
    6. 6. Connect cables

Is it possible to jump start a car in rain?

You can jumpstart your car safely in the rain if you follow these precautions. It seems unsafe because water conducts heat and electricity. The car is powered by 12 volts DC with 48-50 Ah amperage. Even in rain, these are good ranges of power to use. 

Up to 10,000 ohms resistance can be withstand by people. With a 12-volt battery, you are dealing with 0.012 amps, so it’s not going to affect the body as long as you do everything correctly. However, it is important to prevent rainwater from reaching the jumper wire's open terminals. Also, be cautious when connecting all the cables. 

There are dangers in jumping start a car

If you don’t have experience jump starting a car, you could be in danger. With a faulty battery, there’s always the chance of damaging the vehicle’s electrical system or starting a fire. The sulfuric acid in batteries is highly flammable. The jumper cables can create sparks when used wrong, leading to a possible explosion or fire if you aren’t careful.

Damage to parts of your car could lead you to paying high repair costs. That’s why it’s best to call roadside assistance or get help from a professional if you aren’t sure what you are doing. 

RELATED: 10 Best Portable Jump Starters – Review & Buyer’s Guide

Preventive Tips: Jump Starting in Rain

These tips will help you ensure safety when you are trying to jump-start a car in rain. These are some things to keep in mind:

  1. Protect the battery terminals against the elements.
  2. You can connect compatible cars together.
  3. You must ensure that all connections are strong.
  4. The red (positive) clamp should be connected first and then the negative (negative).
  5. Don’t allow the cables to touch one another.
  6. You should follow the instructions below.

RELATED: 8 Things That Can Drain Your Car Battery (& How To Prevent It)

How to jump start a car in rain

1. Turn Off Electronics

It is important to make sure that electronic equipment is off. You don’t want anything pulling unnecessary power when the battery gets jumped. 

If there’s enough power for your vehicle, you can turn it on to the accessory placement and switch everything off. You can do this with your headlights, navigation and radio systems. 

2. Park Other Vehicles Nearby

You want your vehicle to be as close as the dead one as you can. Without straining, the jumper cables need to reach between both batteries. 

But there must be some distance between vehicles. You don’t want them touching one another. You won't want them touching each other unless you have a jump rope. 

3. Protective Hood

It’s important to keep as much rain out of the battery area as possible. While you should be safe, you don’t want to add any unnecessary threat.

It is possible to cover both the hoods by using water-resistance material, like a poncho/drape. This protects the electronic components of your car and keeps you safe from the elements. 

4. Use jumper cables to attach

You can now connect your jumper cables after both the engine and key have been switched off. Connect the positive (red) jumper cable first to the red terminal on the dead battery. To access the jumper cable, you might have to take off a cover. The other end of the battery should be connected to the red terminal.

With the black (negative), cable, you will repeat the process. Connect the black jumper to the vehicle's battery. Next, connect the black jumper to the good vehicle battery. To create a ground connection, you can place the battery on top of a car's metal surface. Do not touch them together. 

RELATED: Which Size Jumper Cables Should I Use? (2 vs 4 vs 6 Gauge)

5. Get started with cars

The healthy battery should be charged before you start the vehicle. Let the vehicle start for about a minute before doing anything. Allow the car to run for a few minutes before you do anything else. 

Once you have waited, it’s time to crank the engine of the dead car. If it doesn’t start right away, check all of your connections once again. To get a better connection, it might be necessary to clean up the connections or tighten some things. 

If you can’t get the battery jumped, you might need to call roadside assistance. If you find yourself stuck in inconvenient circumstances, it might be worth having the car towed to a garage for an inspection. 

6. Connect cables

You can remove the jumper cables once the car has stopped starting. However, you don’t want to turn the car off. Allow the car to run for at least 15 to 20 minutes to give the battery the maximum charge. 

To remove your jumper cables you should work in the reverse order from how you originally attached them. To ensure safety, move in reverse. Remember, it’s important that those clamps don’t come in contact with one another, so keep your eye on them as they are being removed. 

Once the car is running you can get out on the roads. It is possible that the car's dead battery resulted from you leaving the lights on, and not because of a malfunctioning alternator. You should have your system checked if you are still having issues.

RELATED: Disconnecting a Car Battery in 7 Easy Steps

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