The problem is that if you let alkaline water get into the battery - it will start to neutralize the acid - thass bad - whats the issue in wiping it off.
What about using WD40 for cleaning battery terminals. and also other electric contacts under the hood ?
it will do the job nicely, use it with some tissue paper
Thanks, already cleaned cng electrical connectors using cloth damp in wd40. Will do same with battery contacts.