Originally Posted by Rick3390
Once they go dead they stay dead!
Pretty much what he said. Yes, the quality of the batteries is big. Also if they go dead in storage and are not charged up pretty quick they will degrade. I don't know what climate you are in or type of storage but if they are discharged greatly and it gets cold they will freeze.
If they were completely discharged in the coach over the winter they should have been taken out or at least had the cables disconnected, put on a programable charger that takes the batteries through all 3 stages of charge, and each should be done independently.
You may end up replacing them again. In the future, if you are storing outside, without the ability to charge, they should be fully charged, then taken out and put in a reasonable environment, like a garage or shed where they don't freeze.
The concept of "my batteries were charged when I stored it and now they go dead fast" escapes me. Batteries are like anything else. They need maintenance.
There, you got your scolding. Must haves for any RV owner are a good VOM with a Clamp type current meter, a programable battery charger, and a hydrometer. All this can be had for under $200 and can add years to battery life and save many $$$$