Altought i did not get A in my chem but i do kno this...

Normal distilled consumer water is not 100% free of minerals altough the content is very very minimal..
And btw.. Humans can drink water without minerals.. Coz we can get minerals from other sources like foods... Its a on goin debate round the world bout the pro and cons of distilled water...

Same goes for battery water.. Some water battery company do add some additives to make the battery last longer even though its not stated in the content..

So its juz the matter of preference i think..

But if want 100% pure distilled water get those industrial/lab grade distilled water in silica or silicon(something like that ) container to prevent contaminants from slowly absorbing in to the water...

Somebody should start selling those.. Sure untung 1... Haha..

Well its related to WC rite.. Hehe.. No other intentions here..
Coz alot duno which to use including me.. So any chemist here care to explain which is better..? Hehe..

Haha.. Orange or Purple would be cool but rare indeed...