The only time my sides were wet was in the older battery storage cases with larger vents on top, and after a rain, for some reason I looked inside and the batteries were wet. I have since changed the cases a newer type battery case with raised vent openings and never saw that again.
The only time the tops get moisture on them is when I equalize them at 15.1 volts and there is a little wet gasses escaping which settles on the top.
Is the water level about 1/8" below the ring?
RVing with SOLAR
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package
Our Solar Album https://www.jaycoowners.com/album.php?albumid=329