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whisky-dave[_2_] whisky-dave[_2_] is offline
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Default Why aren't AA batteries square?

On Tuesday, 3 October 2017 19:39:38 UTC+1, Rod Speed wrote:
"whisky-dave" wrote in message
...
On Monday, 2 October 2017 20:08:51 UTC+1, Rod Speed wrote:
"whisky-dave" wrote in message
...
On Monday, 2 October 2017 01:03:12 UTC+1, James Wilkinson Sword wrote:
On Thu, 28 Sep 2017 10:34:24 +0100, whisky-dave

wrote:

On Wednesday, 27 September 2017 17:51:18 UTC+1, James Wilkinson
Sword
wrote:
On Wed, 27 Sep 2017 16:35:00 +0100, whisky-dave
wrote:

On Wednesday, 27 September 2017 16:15:22 UTC+1, James Wilkinson
Sword wrote:
On Wed, 27 Sep 2017 16:08:23 +0100, whisky-dave
wrote:

On Wednesday, 27 September 2017 15:08:08 UTC+1, James
Wilkinson
Sword wrote:
On Wed, 27 Sep 2017 14:58:40 +0100, whisky-dave
wrote:

On Friday, 22 September 2017 12:10:36 UTC+1, James
Wilkinson
Sword wrote:
Is it cheaper to make batteries cylindrical or something?
If
they were square in crosssection, they wouldn't roll off
the
desk.

I think the real reason was because AA was meant to replace
SP7/HP7s so if they'd made the AA square they wouldn't be
able
to be used in the products that took SP7/HP7s

Never heard of those, and Google just produces AAs which are
also listed as being an SP7/HP7. Have you got a link to one?

https://en.wikipedia.org/wiki/AA_battery

Historically, it is known as SP7 (Standard Power 7) or HP7
(High
Power 7) in official documentation the United Kingdom, though
it
is colloquially known as a "double A battery".

So AA didn't replace SP7, it's just another name, of which there
are about 20.


Which is why AA had to be the same shape and size and it didn't
replace SP7 it mostly replaced HP7 .

https://www.vintage-radio.net/forum/...ad.php?t=95550

But it didn't replace HP7. It was just a name change.

Yes I know which is why it was a good idea to keep it the same shape
and dimentions Making AA square would have meant them not being
usable
in any equipment which previously used HP7s, and that;'s why i think
they decided to make them cylindical, I doubt they considered the
problems you had such as batteries rolling odd the table as very
significant to teh majority.

Think back to when the shape was first designed. Did they not think
about stuff falling off tables?

Probbaly not, otherwise such things as tennis balls, footballs...
and what about car wheels they'd just roll away when you tried to fit
them
totally stupid idea they should have done what the Egyptians did and
make
them pyrimids so they didn't roll away when being fitted.

Those fiendish japs had enough of a clue to have no wheels at all, not
even
on wheel barrows.


They weren't into football or tennis either.


but tehy are into baseball


That was another recent import, stupid.


So what.


Thier sumo boxing rings are round or circular unlike western boxign rings
which are square.


Even you should have noticed that they dont
actually roll around on the floor for some reason.


Niether to boxers stupid.


So how come we dontl have round boxing rings ?.
Why don't boxers train in round rings ?


Even you should have noticed that it gets a bit tricky
doing the ropes that boxing rings have with round ones.


Why do they need them apat from mixed matial arts few fighting areans used any ropes. judo, karate, kung fu, taekwondo...


Sumo has no ropes, stupid.


what has that go to do with it.