Roadside help
Battery Jump Start
12-volt jump-starts for EVs, hybrids and gas vehicles. Yes, EVs have a 12-volt battery too.
Many new EV owners are surprised to learn their car still has a small 12-volt battery. It powers the computers, door locks and the relay that wakes up the high-voltage system. When it dies, a car with a full main battery may still refuse to turn on.
An EVShield jump-start restores the 12-volt system safely so the car can wake up. We work on EVs, hybrids and gas vehicles, so the whole family driveway is covered.
How it works
- 1
Describe the symptoms
Dark screen, unresponsive doors, warning messages: tell us what you see.
- 2
Technician arrives
We locate the 12-volt jump points for your specific model.
- 3
Wake and verify
We restore power, check that the car enters ready mode and advise on next steps.
When to call us
- The car will not unlock or wake up
- Screens are dark even though range was fine
- A 12-volt warning appeared before shutdown
Never jump a high-voltage battery
A jump-start only ever involves the 12-volt system. The high-voltage pack is never touched. Some EVs hide jump terminals under the hood, frunk or a trim panel; we know where to look.
Repeat failures
If the 12-volt battery keeps dying, it may need replacement. Ask about our battery exchange service.
Questions about battery jump start
Can you jump-start an EV?
Yes. EVs have a 12-volt auxiliary battery that can be jump-started safely.
How much is a jump-start?
$140 for a 12-volt jump-start. Mobile charging is a separate service. Square displays the final checkout total.
Do you jump gas cars too?
Yes, gas and hybrid vehicles as well.
Can my EV jump another car?
Many manufacturers advise against it. Check your owner’s manual.
What if it dies again?
The 12-volt battery may be failing. We can discuss a replacement.
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