Baking soda and water.
No, but they will corrode at the battery posts. Clean them off with water and baking soda. Then use a battery post cleaning tool to clean the post off.
Use a mixture of baking soda and water.
use a mixture of bicarb and water and let dry completely
Clean it with a mixture of baking soda and water.
Pouring hot water on a car battery may temporarily help dissolve some of the corrosion, but it is not a recommended method as it can potentially damage the battery. It's best to use a mixture of baking soda and water to clean corrosion from a car battery.
nope. you might have to clean the terminals to the battery with a wire brush, but it doesn't hurt the car at all.
Wash it off?
First clean battery connections, if this does not correct problem the battery needs replacing.
It will help, but a much better solution is to remove the battery cables, clean the connections and then use baking soda to neutralize the corrosion.
yes
Four to seven years. Whether the car has an automatic transmission or a manual transmission, it makes no difference to the battery's life. What affects the life of the battery is heat (if the car originally had a battery heat shield, be sure it's back on) vibration (make sure you have a battery hold-down keeping iy tight in place) parasitic loads (keep the battery terminals clean), and number of charge cycles (many short trips will give you fewer years of use than fewer long trips), and electrical load upon starting (keeping car well-maintained, clean oil, ground connections clean and tight helps reduce the starter's load on a battery).
Best is a wire brush and baking soda. You can use grease to coat the terminals to slow down the corrosion.