I have a couple questions. First, I'm getting some spray or mist of battery acid from my trolling batteries venting in my bilge. I've never seen it and I've always noticed these batteries vent constantly, you can hear them all the time whether being charged or used. Doesn't seem normal but what do y'all say? I washed everything today when I noticed it and nothing looks to be getting ate up so it just happened very recently. So that brings up the next questions. Is there a good 29 series agm or sealed battery for trolling? My current flooded batteries are 27s and last without issue but I would like the little extra of the 29s. One more question, in a 36v system would y'all think 50ah lithiums would be plenty if the 27s are?