Looks like I opened a can of worms again.
Didn't realise that battery's were a sore point with drivers?
Maybe we should have a Forum called "Can of Worms" full of all the niggley things that irk some?
Also learnt a lot about battery's to via trevmar.
Had never herd of using rainwater in the radiator or even distilled water.
The longest a battery has lasted me is 8 years in my land-rover (original equipment).