What is the white powder on my car battery terminal?

I was doing regular car maintenance yesterday and noticed a white powdery substance on my car battery terminal. What is the white powder power on my car battery terminal?

Find out if you’re getting ripped off on your car insurance in less than two minutes.
No spam · No long forms · No fees
Find savings (100% Free)
rating white
3.5k Ratings
Answer provided by
Talullah Blanco
Answered on Jul 19, 2022
The white powder on your car battery terminal is either lead sulfate or anhydrous copper sulfate. If your car battery terminal has a white powder, your copper connectors are corroding. Luckily you can clean battery corrosion by following these steps:
  • Remove battery cables
  • Spray battery cleaning agent on the battery terminal
  • Dry and polish battery terminal posts
  • Reconnect battery cables
  • Apply a battery corrosion preventative
Make battery cleaning and shopping for car insurance part of your regular maintenance schedule to keep your car running smoothly.
Jerry can provide you with competitive quotes in under a minute. Swapping is just as effortless. They take care of all the paperwork and phone calls and can even assist you in canceling your old policy!

Here to save on car and home insurance? Great, you do that. We’ll do everything else.

Sign up in under a minute.
No need to fill out forms or shop around. Sign up in 45 seconds to start saving. Jerry does the rest.
Jerry collects and analyzes your current coverage.
Say hello to Jerry, your new insurance agent. We’ll contact your insurance company, review your current plan, then find the coverage that fits your needs and saves you money.
Get the best options before your renewal.
Jerry does all the picky, busy work by comparing prices and coverage from more than 50+ insurance companies. We compare what we find to your current policy and offer you the three best options before every renewal.

Easiest way to compare and buy car insurance

No long forms
No spam or unwanted phone calls
Quotes from top insurance companies
Find insurance savings — it's 100% free