There will be 12 battery cell tops, flip the tops up and add deionized water to a level just above the plates or separator on each one. Only do this when the battery is fully charged as this helps prevent over filling. Basically if you can see water in the battery cells, there is enough in there. Over filling is the main cause of premature battery failure.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.