Quote Originally Posted by NewbyScrapper View Post
Is that to dilute the acid or ???
Raises the weight of each battery, it soon adds up...

But all the battery buyers know this too. It'll give them a unforgivable & unforgetable image of you in their head from then on....

Do remember that 4WD & boat batterys are a lot heavier than normal car batterys, even when you take the size of the battery into account. (thicker lead & more cadmium)
If you are selling them these batterys, mention it to them as in passing conversation. Often the labels have rallen off & they can't notice the difference
Its info they want to know & they won't think you are trying to rip them off by putting extra water in them. (this senarao happened to me once, he figured it out after I'd left though)

Those 4WD & boat batterys also last between 1/2 & 3/4 as long as normal car batterys (so they get replaced more often...)