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Old 05-16-2017, 03:38 PM   #19
Greg S
Senior Member
 
City: Maple Bay BC
Vessel Name: Orca
Vessel Model: RFC Coaster 23
Join Date: Dec 2016
Posts: 300
Quote:
Originally Posted by C lectric View Post
Constant reappearance of that corrosion is often an indicator that the battery terminal to case seal has been damaged. Usually from banging or twisting when tightening/loosening the terminals or clamps. Use two wrenches on the nut and the terminal to prevent twisting of the terminal and a puller on the clamp type terminals for the same reason.

Clean it up thoroughly including the wire terminal , coat it with a spray, but if it still reappears shortly then one or more of the batteries has a damaged seal allowing tiny amount of acid leakage when charging.

You just have to decide if you wish to live with it or replace the batteries if the seal is the problem.
This answer!

Micro crack between post and case. You won't see it even if you look. The vasoline or sprays mentioned will seal it somewhat.
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