For corrosion problems:
A solution of baking soda and water will clean battery acid, as will Coca Cola.
Take the battery out, clean the battery pocket, and put the battery back in.
Clean it with a mixture of baking soda and water.
vinegar
You can clean the posts on your battery with sandpaper, or scraping the with a wire brush, or a knife. You should also clean the inside of the connectors. If they have gotten to that point and the battery is not sealed, you should check the level of the fluid. if it is low, fill it with distilled water.
Remove the battery and rinse the holder with clean water from a garden hose. After cleaning sprinkle baking soda on the area to neutralize the acid. Let set for 15 minutes and then rinse clean. Let air dry and replace the battery.
take the battery terminals off and clean them and the battery mountings on the battery real good and reinstall.
First take the cables off then the hold down then lift the battery out. Clean the battery box with a mixture of soda and water then spray it with WD40 then install the new battery and clean the cables before you reinstall them.
If you are asking about cleaning the exterior of the battery then the answer is yes. The baking soda will neutralize the battery acid and the water will clean everything off.
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.
Check your cables for corrosion; if there is any,clean them or replace them. Clean the connections at the starter and clean all grounding wires; test the starter regardless if you think it is good. Clean the battery terminals.
tight and clean the battery cables.