Sulfuric acid fumes escaping from the battery causes this corrosion.
The starter or battery cables/terminals are corrode.
Coating your car battery's positive and negative terminals with Vaseline will delay their natural inclination to corrode. It is a well known fact that sugar will corrode your teeth.
Car battery terminals corrode due to the accumulation of sulfuric acid vapor and hydrogen gas emitted during the battery charging process. These gases react with the lead terminals, forming lead sulfate and lead dioxide, which are visible as white or blue powdery deposits. The corrosion can hinder the flow of electricity between the battery and the vehicle's electrical system, leading to starting issues and decreased battery performance.
hydrogen gas being released from the acid in the battery. It mixes with other things in the atmosphere under the hood and produces the corrosion you see
Batteries, specifically wet cell batteries, mostly corrode due to leaks in their casings. These leaks allow the material inside the battery to seep out and contaminate the battery's metallic casing. This leaked material acts as a catalyst for the oxidation of the metallic casing of the battery, otherwise known as corrosion.
The corrosion on the battery terminals is from the acid inside the battery. Baking soda neutralizes the acid so that it doesn't corrode the battery cables and the metal parts around the battery.
The function of battery terminals is to connect a load or charger to a cell battery. Battery terminals are necessary and common in a lot of batteries.
There are a few possibilities: Low battery, either because the alternator isn't keeping the battery charged or the battery is old and has failed. Corroded battery terminals, usually an indicator that the battery is blowing acid fumes. Batteries usually don't last long after the terminals start to corrode. Faulty starter solenoid. IT SOUNDS LIKE IT COULD BE YOUR STARTED CYLINOID
Corroded battery terminals, defective battery, or starter.Corroded battery terminals, defective battery, or starter.
Most battery terminals are made of lead.
on the battery
It could be as simple as a corroded battery terminal. Remove both battery terminals and clean them then see if it makes any difference. BTW, when a battery starts to corrode terminals it usually means that it's starting to vent some battery acid during the charge cycle. That's a sign that the battery is getting ready to go bad. It's probably still ok for now, but be ready for it to go out on you.