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 Return to top of page · Post #: 31 · Written at 8:08:55 PM on 2 March 2020.
Brad's avatar
 Brad
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7307

I've never really noticed a pattern there but I will watch out for it. I replaced the battery in my car last year but I don't remember the date it was done. I keep all tax invoices for car-related spending in the glove box so I will check that tomorrow and report back.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 32 · Written at 12:02:46 PM on 3 March 2020.
Ian Robertson's Gravatar
 Ian Robertson
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2372

So the phenomenon might be real! Possible that tiny amounts of calcium leaching through the rubber destroys the battery? Reason for only using distilled water for battery top-ups?
 
 Return to top of page · Post #: 33 · Written at 12:30:26 PM on 3 March 2020.
STC830's Gravatar
 STC830
 Location: NSW
 Member since 10 June 2010
 Member #: 681
 Postcount: 1256

Perhaps the concrete cools the bottom of the battery and its fluid, interrupting convection driven circulation within the cells.
This presupposes that convection driven circulation does occur, and that if it does, is vital to the battery's function.
 
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