Joined: 05 Oct 2008 Posts: 1035 Location: Stoke by Clare, Suffolk
Posted: Thu Apr 14, 2011 6:38 pm Post subject:
If it is a dry, charged battery then putting acid in it will do no harm. I do not know if they deteriorate over time and I would always give them a charge before using them. Try it and see, I was going to say "suck it and see" but that is not very sensible. _________________ 1936 Morris 8 Series 1
1973 MGB roadster
1977 MG Midget 1500
Dax Rush
If it is old old stock then it is unlikely to be dry charged and you will need to lift it up (there are guides on t'interweb). Its a sort of slow charge at varying rates to ensure that the plates dont get damaged and not too much gas boils up.
If it is newish but old (post 1990) then it may well be dry charged and you should find that the acid alone will activate it.
Take a lot of care in either case, as both quickly form gas and the the cells can spit.
Back in the 60's 70's, when I worked in the mining industry, there was a department where replenishing batteries was an everyday job and Sulphuric Acid at the correct S.G was readily available. I remember extending the life of several batteries by replacing the acid.
Batteries were a real pain back then, I don't miss them one little bit.
Joined: 27 Dec 2008 Posts: 1116 Location: Chesterfield
Posted: Wed May 04, 2011 7:27 pm Post subject:
paulbrook wrote:
If it is old old stock then it is unlikely to be dry charged and you will need to lift it up (there are guides on t'interweb). Its a sort of slow charge at varying rates to ensure that the plates dont get damaged and not too much gas boils up.
If it is newish but old (post 1990) then it may well be dry charged and you should find that the acid alone will activate it.
Take a lot of care in either case, as both quickly form gas and the the cells can spit.
We had dry charged batteries in stock back in the 1960s. The shelf life was claimed to be measured in years. However, we always found a topping up charge was advisable after filling and "soaking" time and the shelf life was much less than claimed.
My Dad supervised stock buying and ordered these, and he retired because of poor health in 1970. Which helps me with the dates. _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then!
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