Quote Originally Posted by johnboy1 View Post
I have a minn-kota 330 that I installed back in the summer to replace a duel-pro. The reason for change was due to the need to continue to add water to the batteries every couple months. Each charger is a maintenance free unit but, I continue to have to add water to my batteries and so I wonder if the term maintenance free is just a play on words and means nothing. HAVE ANYONE ELSE HAD THIS PROBLEM? In reading the spec. on my new minn-kota 330 charger I was of the belief that the monitor would prevent any lost of fluid.
You are always going to have some water loss. Charging creates heat which inturn causes evaporation of fluid. Most new chargers have a maintaince mode which means at certain periods they go into a deep charge to clean plates. This will cause some evaporation, couple that with summertime temps your always going to have to add some water. About 2 months I would say is average.