Yes, an electric vehicle (EV) can be used to jump-start a petrol car, but it must be done correctly to avoid damaging either vehicle's sensitive electronics. The process involves using the EV's standard 12-volt auxiliary battery, not its high-voltage traction battery that powers the wheels. This smaller battery is similar to the one in a conventional car and is used to power accessories like the lights and infotainment system.
The key is locating the 12V battery terminals, which are often in the frunk (front trunk) or under a specific service panel, as detailed in your EV's owner's manual. You connect the jumper cables to these designated points just as you would with two petrol cars: positive to positive, and negative to a solid, unpainted metal ground on the disabled car's engine block. Once connected, you may need to "wake up" the EV's 12V system by putting the car in its "Ready" or "On" mode before starting the petrol car. The primary risk is a power surge, so ensuring clean, correct connections is critical.
For a safer and often more convenient alternative, consider keeping a portable jump starter pack in your car. These compact lithium-ion power banks eliminate the need for a second vehicle and completely remove the risk of incorrect connections causing expensive damage.
| Consideration | Electric Car as Jump Starter | Portable Jump Starter Pack |
|---|
| Power Source | EV's 12V auxiliary battery | Internal lithium-ion battery |
| Risk of Damage | Moderate if done incorrectly | Very Low |
| Convenience | Requires a second vehicle | Works completely alone |
| Cable Connection | Can be complex; must find specific terminals | Simple, direct connection to battery |
| Best For | Emergency situations with no other options | Reliable, safe solution for any driver |
