Ok this is the situation, I haven’t used my boat since around May, today I started to charge my batteries but was wondering do I need to add water to the batteries??? I haven’t even thought about this until now. Oh and it’s suppose to snow this weekend, going to add some sea-foam to the gas tank. Is this a good idea being that I want to fish this winter???

I run seafoam in some of my engines all year long.  On the battery situation not charging them for months is not good.  Check the water.  If it is low add then charge.