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Old 03-24-2016, 02:08 PM   #18
Arctic Traveller
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City: Juneau Alaska
Country: USA
Vessel Name: Arctic Traveller
Vessel Model: Defever 49 RPH
Join Date: Oct 2007
Posts: 607
Originally Posted by C lectric View Post
Overfilling of one of the cells when topping off the water level can also cause this.
May not be your cause but if the batteries and the charger appear to be good then review your topping off procedure.

This was my first thought. Over charging will boil off the water normally resulting in too little water. Never top off the water on a discharged battery, wait until it's fully charged and don't over fill, but never let the plates become exposed.
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