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Old 04-20-2015, 04:38 PM   #3 (permalink)
Daox
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In the short term, you can add water to battery cells. You don't add acid to them. The water evaporates and you'll need to add more eventually.

Other than that, I'd definitely check to see what kind of voltages you see while running because like Hersbird said it could be overcharging and boiling the water out. In that case, the regulator is in need of attention.
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