My last battery was a 12v 8D truck battery. I noticed that the top of the battery tended to stay wet or very moist.
Now I have two 6v golf cart batteries. While looking over the system yesterday I noticed that the top of those batteries was wet.
I looked into all these batteries when they were full charged and dumping and they were slowly bubbling, maybe a bubble every couple of seconds. It doesn't seem like this slow bubbling would cause moisture on top of the battery.
I have 2 stages of dumping in my charge controller.
A 3 amp dump comes on at 14.6 volts and
a 6 amp dump comes on at 14.7 volts
Sometimes when I'm not home and using the power, the battery voltage will get up to the 14.7 volt stage at 11:AM in the morning and remain there all day, maybe that is too high.
I'm just afraid that the acid may be getting out of the battery. What would cause the top of the batteries to get wet like that ?
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