Q: Car battery issue

asked by on

This morning I went out to my car and it wouldnt start, I then noticed i left an interior light on so that probably meant I had a dead battery. My grandpa got home to jump it and when he plugged in the jumper cables he didnt realize he let them touch wrong so it caused a spark and he quickly pulled it out. (Within about 5-10 seconds) After making sure they werent touching the car jumped on just fine. It runs and idles fine but as soon as I turned the headlights on it died. After giving it a little more charge I could turn the headlights on without it dying. I thought I could pull away but once I pulled out the driveway my car felt like it didnt have enough charge to go past 15 mph. You could tell it was slower than usual. Could I just need to charge the battery overnight?Or did my grandpa do serious damage letting the cable touch incorrectly.

My car has 166000 miles.
My car has an automatic transmission.

It is possible the systems that charge the battery and the battery itself may be damaged from the shorting of the wires. I would recommend charging the battery and the recheck the battery holds a load or needs replaced. Then the charging system tested to see if the system is charging and then test the computer with a scanner to see if it sustained any damages. If you need help with the tests then call a mechanic like one from YourMechanic to come to check the entire electrical system for damage or problems.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car battery issue

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Car not moving when in gear

If the shifter linkage has failed or broke it will not allow the transmission to be put into gear. The transmission has multiple clutch packs that control the different gears that are used while driving. Inside these clutch packs are...


Hello: Anytime you're ECU stores an error code, it's typically a sign that a major mechanical or electrical issue could cause serious damage to the engine. In this case, the P0305 OBD-II Trouble code indicates that the engine control module...

Q: Lifespan of the battery and alternator in my car

The average lifespan of a battery will depend on your geographic location and the relative weather conditions there. In extreme heat or cold conditions batteries do not last as long due to the harsh temperatures that affect the longevity of...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.