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Lead acid batteries.

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Posted by harry on November 3, 2009, 7:38 pm

A lot of discussion about lead acid batteries I see.
In days of yore, batteries came in big glass tanks and when they
failed, you could take them to a local shop & they would be dismantled
and new lead plates & acid fitted. They were called accumulators here
in the UK then.
I wonder if that's still possible today?  Could a battery be modified
to make it dismantlable & then repaired?
Or could one make one's own battery in say a plastic dustbin/
trashcan?   What would be the problem? It's easy to get hold of sheet
lead intended for roofing.
There seems to be all the information here:-

Posted by Scott on November 4, 2009, 1:46 am

On Tue, 3 Nov 2009 11:38:06 -0800 (PST), in alt.energy.homepower, harry

Probably not cost-effective at the consumer level.  Most of the value is in
the metal and acid, the rest is just a cheap plastic tank.

ISTR something about industrial scale batteries build up from individual
2-volt cells of the usual modern construction.  Allows easy replacement of a
bad cell without the hassle of handling an open container full of heavy
metals and corrosives.

I think you would have a very hard time coming anywhere near the efficiency
of a modern manufactured battery, on both a cost and energy basis.

Posted by Jim Wilkins on November 4, 2009, 11:30 am

On Nov 3, 8:46pm, nob...@xmission.com (Scott) wrote:

You could consider iron-nickel batteries too.


Posted by BobG on November 4, 2009, 5:50 pm

On Nov 3, 8:46pm, nob...@xmission.com (Scott) wrote:

Thats Rolls Surrette... search for 2 volt battery

Posted by spike on November 6, 2009, 10:28 pm

harry schrieb:

Try to get your hands on Creative Science & Research #396, i am sure you
can get it via torrent or something. in there it describes how to make
your own batteries. you use old ALUMINUM coke cans as kathode(-) (remove
coting inside the coke-can before proceeding), and a COPPER pipe (of
course isolated from the aluminum) as anode(+) and fill it up with
WATER, adding 5-10% ACID (tap water with bleach)...

when their empty just refill the tap water + acid.
if you add more acid to the batteries, the more Volts, but the metal
will corrode much sooner.

you can put those coke can-batteries in series and/or parallel to get
more out of it.

have fun building it ;-)

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