Guide to jump-starting an electric car battery
Quick insights
- Jump-starting an electric vehicle (EV) comes with risks, but when done safely it can be a helpful way to get your car back on the road.
- It’s more complicated to jump-start an EV compared to a gas-powered car and you may need different equipment.
- If jump-starting your EV doesn’t work, you can always call for assistance.
If you've ever found yourself stranded on the side of the road with a dead electric car battery, you may be wondering if jump-starting it is an option. The short answer is maybe, but it's not as simple as hooking up some jumper cables and hoping for the best. Jump-starting an electric car can be a bit more complex than jump-starting a gas-powered car. Let’s get into the details below.
Can you jump start an electric car?
- Yes, jump-starting an electric car is possible. However, it may not always be the recommended solution. Here's why:
- Electric cars have high-voltage batteries that require special care
- Jump-starting an electric car can cause more harm than good if not done correctly
- There may be safer and more reliable ways to get back on the road
Jump-starting an EV car battery (note—not its computer system, but the battery of the engine) can be complicated. However, if you do it correctly and safely, it can be beneficial.
What you need to jump start an electric car
When jump-starting your electric car, you'll need the below items:
- A set of jump cables specifically designed for electric vehicles
- A second vehicle with a compatible battery and a working 12-volt system
- A direct current (DC-DC) converter (optional, but recommended for added safety)
Safety considerations
If you've decided to jump start your EV, make sure you first take the necessary safety precautions to avoid any potential risks. Below are a few things to keep in mind before jump-starting your EV:
- Turn off the car and all accessories to avoid any electrical shocks
- Wear protective gear, such as gloves and safety glasses
- Ensure the car is in park (or the equivalent) and apply the parking brake
Before we get into how to jump start an electric car, it's also important to understand the risks involved. Electric cars have complex electrical systems that can be easily damaged if not handled correctly. Some of the potential risks of jump-starting an electric car include:
- Electrical shock or fire
- Damage to the car's computer or other electrical components
- Voiding the car's warranty
- Note that manufacturers may recommend against jumping an EV if possible
Now that you’re aware of some of the safety precautions and risks, let’s review the items you’ll need to jump start your EV.
How to jump-start an electric car
Once you have everything you need and have taken the important safety precautions, you can jump-start your car. Below are the following steps to take to jump start an EV:
- Locate the 12-volt battery and the high-voltage battery
- Attach the jump cables to the correct terminals
- Start the second vehicle and let it run for a few minutes
- Turn the key in the electric car and let it try to start
As always, you should refer to the owner’s manual for specific instructions and what your EV requires.
Tips and tricks for jump-starting an electric car
Here are a few additional tips and tricks to keep in mind when jump-starting an electric car:
- Make sure the second vehicle is parked on a level surface and in neutral gear and align the cars appropriately in front of each other
- Use a high-quality set of jump cables specifically designed for electric vehicles
- Avoid crossing the jump cables or touching any metal parts to avoid a shock
- If the car doesn't start right away, try letting it sit for a few minutes and then trying again
What to do if jump-starting doesn't work
Even with your best effort, sometimes jump-starting doesn’t work. But don’t worry, there are some other options available. For example, you can call roadside assistance or a tow truck to help you get off the road safely. You can also try to charge the car's battery using a level 2 charger or a fast charger. Finally, don’t be afraid to call a professional and ask for help or advice.
How to avoid running out of a charge
To help you avoid having to jump-start your EV, make sure to:
- Keep your car's battery charged regularly
- Plan your route and charging stops in advance
- Carry a portable charger or a jump pack just in case
By following these tips and taking the necessary safety precautions, you can hit the road with confidence knowing that you're prepared for a variety of situations that may come your way.
In summary
Jump-starting an electric car isn't always ideal and can be more complicated than jump-starting a gas-powered vehicle. However, following the steps listed above, referring to your vehicle’s owner’s manual and taking the necessary safety precautions can help you minimize the risk of damage to your car and yourself.
