Posted by Bob at Notts on June 21, 2000 at 04:12:32:

In Reply to: Disco Battery. But applies to all. posted by Don. on June 20, 2000 at 16:28:31:

A friend of mine with many years experience in the battery industry says that the term 'maintenance free' is something of an exaggeration. They would be more properly termed low maintenance.
The rule is if you can get the cell caps/cover out then you can (and should)top it up.
From my own experience with many vehicles, they need looking at at least once a year. Usage and under-bonnet temperatures obviously affect the degree of evaporation/electrolysis.
Lucas (Yuasa) have, incidentally, a good reputation.