Hi all, Just been checking my battery to see if it needed topping up. I find that the cell/caps are covered with black seal tape (as from new) this can be peeled back to reveal each cell plug. when cell plug/s are removed they have small length of plain tube below the threaded area, at present the acid/water level line is approx 1/4 way up this tube, I need to know if this is correct or not? Audi book states 'to top up to level' what level! no markings anywhere as I can see. The battery is the 'magic eye' type and it's rather difficult to see clearly but I think I can just see slight/green (very faintly), any advice anyone, Cheer's Alan.