Originally Posted by retiring1day
Is it ok to clean the batteries or should I replace them?
Welcome to the forum retiring1day. Hope that special day is soon.
Why are you asking the question? Are you having problems with them? Which batteries are you asking about? The 12 volt starting or the 6 volt house batteries? Looks like your coach is 6 years old, so the batteries could
be on their last legs, depending on their care up to now.
In general, if it was me, I would first take pictures of the battery compartment making sure you get a good picture of all connections and wires. Then check and make sure the battery caps are in place and then carefully wash the battery compartment out with water from a garden hose. Then use baking soda mixed with water and a brush to coat the batteries and promptly wash off. This should neutralize all of the acid in the battery compartment and from the top of the batteries. This keeps any acid from eating holes in your clothing, and is safer to work around batteries this way.
Now with the batteries clean, remove the caps and check the water level. Along with checking water level you may need to clean the battery post connections. Just make sure the coach is not plugged in, and disconnect switches are set so there isn't any current being drawn from the batteries while you are cleaning the post.