Hmm, that makes perfect sense and I am for some reason was confused and scared myself based on that confusion. Few years ago, I used to have Mercedes that came with battery which require maintenance by pouring distilled water in 6 holes and topping up every six months. I used to buy distilled water from emarat for 3 dhs and always use to make sure to keep the bottle upright in my boot, thinking it is hazardous. Waste a waste....lol.....Thanks for clarifying the difference in acid and water.