How's your hearing ?
 

Misifus wrote:

I've opened numerous 9V batteries, they have always contained 6 smaller,
cylindrical cells.

I've opened numerous ones too and they all contained 'layered' flat cells.

I've opened one, and it had the LFC, but I think it was a "mercury"
battery. (ca. 1955)

Cheers!
Rich

How's your hearing ?
 

On 2008-12-28, krw wrote:


Dunno, all I seem to find in web searches is Duracells. Last time I
took apart a 9V battery (likely 40 years ago) there were rectangular
cells stacked inside. I do know how to use Google rather than
running my mouth like a Dumb Donkey, though.

AFAIK all alkaline "9V" batteries are internally 6 x AAAA,
but for carbon-zinc batteries I've seen stacked cells used too.

alkaline operates much at higher pressure than carbon zinc, so I think the
6xAAAA is the only useful geometry.

How's your hearing ?
 

On 2008-12-29, Fleetie wrote:
Someone else described the innards of a PP3 battery as a
"stack of lozenges". This is a perfect description of what
I found, the only time I bothered looking inside one; I
have no idea when that was, but I imagine quite a number of
years ago; maybe when I was a teenager.

I would imagine that that arrangement would fill the internal
space better than 6 cylindrical cells; I wonder what effect
that latter arrangement would have on capacity. It seems
silly to me.

Why make a cylindrical AAAA to put inside a PP3?

pressure inside alkaline cells.

Or do they also put 1xAAAA in AAA, and AA batteries too?!

(I have read not that long ago about C cells being found
inside nominal "D cells"! Cheeky ****ers! Can't remember
what manufacturer that was, though.)

many makers.

I has some YUASA nicads like that.
(well, the cell dented easily and had 1200mAh capacity
same as the C cells on the next shelf - I didn't look inside)

AA cells are about the same length as C cells which is often
convenient :-)

Disclaimer - it's been about 15 years since I pulled a alkaline
cell apart, but last year they were still making alkaline 9V
batteries with 6xAAAA in them

How's your hearing ?
 

Jasen Betts wrote:

AFAIK all alkaline "9V" batteries are internally 6 x AAAA,
but for carbon-zinc batteries I've seen stacked cells used too.

alkaline operates much at higher pressure than carbon zinc, so I think the
6xAAAA is the only useful geometry.

That's the answer then. Old gits who last dismantled a PP3 when they
were twelve
think they contain a stack of lozenges. Young pups who would only buy a
zinc-carbon battery by mistake know what's inside an alkaline battery.

--
Eiron.

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On Mon, 29 Dec 2008 23:48:33 +0000, Eeyore
wrote:

I've opened numerous 9V batteries, they have always contained 6 smaller,
cylindrical cells.

I've opened numerous ones too and they all contained 'layered' flat cells.

I've never opened a 9v battery. Am I missing out on something?

How's your hearing ?
 

In article ,
Jasen Betts wrote:
Dunno, all I seem to find in web searches is Duracells. Last time I
took apart a 9V battery (likely 40 years ago) there were rectangular
cells stacked inside. I do know how to use Google rather than
running my mouth like a Dumb Donkey, though.

AFAIK all alkaline "9V" batteries are internally 6 x AAAA,
but for carbon-zinc batteries I've seen stacked cells used too.

alkaline operates much at higher pressure than carbon zinc, so I think
the 6xAAAA is the only useful geometry.

Ages ago I would take apart dead MN1602 Duracells for their connectors -
far stronger than the usual ones fitted to equipment. And those alkalines
used stacked cells - not AAAA or whatever.

--
*How can I miss you if you won't go away?

Dave Plowman London SW
To e-mail, change noise into sound.

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"Misifus" wrote in message


I've opened numerous 9V batteries, they have always
contained 6 smaller, cylindrical cells. Each of the
smaller cells makes approximately 1.5V, thus giving 9V.

I've got some new EverRead Gold alkaline 9v batteries at church that measure
over 11 volts when new.

You've peaked my curiosity, I'm going to take one apart and see what is
inside.

The chemical reactions that produce the potential for all
types of dry cell batteries generally produce between
1.2V and 1.5V. In order to get higher voltages, the cells
must be combined, as they are in the 9V.

Right. I think that a typical modern alkaline is more like 1.56 volts per
cell.

I've also heard of 9 volt batteries with an extra cell for extra voltage. If
memory serves, this related to one of the rechargeable technologies, maybe
NiMh or Li.

Obviously, the wet cell batteries in cars, golf carts and
trolling motors produce a bit more, about 2V per cell.

The voltage a cell puts out is very dependent on its chemistry. Classic
lead-acid cells with a sulfuric/water electrolyte are very different from
alkaline cells, NiCd, NiMh, Mercury cells, etc.

How's your hearing ?
 

I've got some new EverRead Gold alkaline 9v batteries at church that measure
over 11 volts when new.

Under what load?

And how about if you take them out of church? Maybe it's a water/wine
thing :-)

How's your hearing ?
 

Michael A. Terrell wrote:
David Looser wrote:
"Michael A. Terrell" wrote in message
m...


There is only one common 9V battery in the US. It is the only type
you can buy over the counter in 99% or more retail shops.
So?, it's still only one type of 9V battery, there are others.


Not to over 99% of the world's population.


The fact that the groups posted here include uk.rec.audio might be a
clue to you. Just in case - there is a world south of the Rio Grande,
North of the Great Lakes, West of Oregon and East of New York. And the
US does *not* contain 99% of its population, much as many of your
compatriots seem to think.

Are all your posts simply attacks on Graham? or is there some point to your
existance?

Existence.

He usually pulls him dumbest stunts when he is crossposted to the
audio newsgroups where he thinks he is the ultimate audio engineer by
pointing to used crap for sale on Ebay. Since you are posting from
BTInternet and on one of the audio groups I don't expect anything
intellegent.


Intelligent.

Right pair you two. 'nuff said.

Oh yes, my BM602s are better than my ears. You are into diminishing
returns at £350 for speakers.

Andy

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Arny Krueger wrote:

"Misifus" wrote in message

I've opened numerous 9V batteries, they have always
contained 6 smaller, cylindrical cells. Each of the
smaller cells makes approximately 1.5V, thus giving 9V.

I've got some new EverRead Gold alkaline 9v batteries at church that measure
over 11 volts when new.

You've peaked my curiosity

pedant mode on

piqued

pedant mode off

Now back to that literacy thread ! ;~)

Graham