Came home from camping vacation and next day had a strong smell of sulfur coming from camper. checked battery compartment and found battery swollen and boiling over. Took out old battery and replaced ...
It will not be a problem with the proper charging system. We are plugged in 24/7/365 and do not have a problem. I check water in batteries once a month, seldom have to add any, but do have a 3 stage charger.