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post #5 of Old 11-01-2013
fryewe
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Re: Uneven Water Loss in Batteries

Off gassing (water loss) primarily occurs during charging. Water loss is also higher when electrolyte temperatures are hotter.

If you have watered the batteries each month and this is the first month the water inventory in the batteries has been noticeably different (and the first that month there has been appreciable water loss) I would check to see if there is current leakage through a ground path or an overlooked load that has been draining the batteries…either of which could cause increased charging and thus greater water loss. Of course check all connections on the charging path for both batteries. Is one battery wired for starting only and the other for house loads?

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