I purchased two interstate deep cycle batteries in august. starting battery discharged while fishing a week ago. I charged both batteries and checked voltage the next day. one read 12.7V and the other read 11.1 v.
Returned battery to dealer and after testing was told that "the battery had been filled with water". It basically had no acid. I have only added a couple of ounces of water since I have had them. I am really confused as to how I could end up purchasing a battery with no electrolite and just water????