Hi Joe
i'm not sure if theres much of anything that can withstand exposure to battery acid for any amount of time without it eating it up.
You can try using an extreme duty epoxy paint, and maybe even put sealer over that.
As for the concrete? once the acid soaks into the floor the acid will start etching it out and as deep as it soaks will eventually deteriorate. The best defense against acid (battery) spills is to have some neutralizing solution handy and put it on the area immediatly when discovered. They do make spill kits designed for this i do believe, just shop around at places like grainger or mcmaster-carr.

looks like you need to have a battery maintenance class with your operators on how to check, fill and charge a battery.
One of the first rules to teach them is NEVER fill before charging EXCEPT ONLY IF the cell plates are dry.
AND THEN ONLY put enough water to cover the plates.
Then you can charge the battery and IF it needs water after charging THEN they can fill the cells to the correct level.


good luck!