Don't open Auto Batteries, by a battery engineer

As I mentioned before, we make batteries for 90% of the US auto market. I am also a safety member of BCI.Don't open an auto battery. You don't need to because new alloy and other technology are improved in these years. As for marine, golf cart and other special applicaitons, you may need to water the batteries.
Yes, battery may explode if the electrolyte level is low. But the chance is very low for auto batteries.