Q: Battery with white buildup

asked by on

I've noticed a pretty big buildup of white gunk on my car battery. The car always starts up fine at first turn. Is it affecting anything? Should I clean it off?

Yes, you’ll need to clean the connections off because it will eventually start to corrode the metal.

In order to do this, take your battery terminals off, clean it really well with a wire brush that you can get at auto parts stores. Once you clean them reconnect the connectors on tight. Then buy a can of battery terminal corrosion resistance spray which you can also get at auto part stores. It’s usually a red spray. Once you apply the spray corrosion won’t occur anymore because it will seal battery acid from getting on the metal and prevent that white buildup you saw. It’s good practice to do this. You don’t want a bunch of corrosion accumulating under the hood.

If you need help with this or run into any problems with your battery, contact a certified mechanic who can help you ensure that your battery and cables are maintained for proper operation.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Battery with white buildup

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: undercoating

If your vehicle is already in service, there is probably some rust and corrosion already on the underbody. Undercoating is useless on those segments because the rust will simply continue unabated once coated. There is little, if any added benefit,...

Q: How do I add washer fluid?

If you attempt to wash your windshields with the wiper washers, and no fluid comes out, then you will need to add more washer fluid. To do so, open the hood, and locate the washer fluid reservoir. Open the lid,...

Q: Car not starting even though lights work

Hi. I would have the battery load tested. Sometimes, when the battery starts to die it will not have enough cranking amps to turn the motor over. This means that your vehicle will not turn on even though your accessories...

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.