Originally posted by Navigator
One thing that I found out the hard way is that if the polarity to your univolt is reversed, bad things happen, and it is a bear to figure out!
At the very least, your battery will discharge VERY quickly, and recharge opposite polarity, with a resulting loss of amp capacity and amp/hour rating, not to mention strange things happening like your water pump running backwards. And these are the least bad things.
If this happens, hook up a non-polarity specific load to the battery, like a light or two, and completely discharge the battery again, and use a slow charge to charge the battery back up with the correct polarity.