Inexhaustible batteries? 1

• Nov 29, 2012

• #2

hydroman247

Mechanical

Jun 1, 2012

176

The calculator uses very little power and the batteries are good quality.

 

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• Nov 29, 2012

• Thread starter
• #3

oliamel

Computer

Nov 29, 2012

3

Thank you hydroman247, but still, 28 years?? Everyone else has told me that it's impossible.

 

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• Nov 29, 2012

• #4

MiketheEngineer

Structural

Sep 7, 2005

4,654

OK - it's impossible. Maybe you changed them in your sleep or something??

Congrats on 28 years - AMAZING!! I have had 2 year old batteries burst!!

 

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• Nov 29, 2012

• #5

VEBill

Military

Apr 25, 2002

7,090

Coincidentally, in 1984 while visiting Hong Kong, I bought an Icom IC-02AT walkie talkie. It contains a wee little battery (soldered in button cell) that holds up the memory (RAM). That little battery is still working.

 

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• Nov 29, 2012

• #6

telecomguy

Mechanical

Jan 4, 2006

274

Are you sure that's not one of the early solar calculators? lol

 

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• Nov 29, 2012

• #7

IRstuff

Aerospace

Jun 3, 2002

44,762

Are you sure this isn't like the prank where someone keeps fiddling with the victim's cane to make him think he's getting taller?

Maybe someone's been changing your battery for you?

TTFN
faq731-376

 

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• Nov 29, 2012

• Thread starter
• #8

oliamel

Computer

Nov 29, 2012

3

I suspected I would get a lot for funny replies. Since my calculator is a museum piece, no one ever touches it. I'm not a battery expert but the code "C8501" could it be the supposed expiry date [Jan '85]. The irony is that the manual mentioned that "the batteries that come with your calculator when you purchase it are for testing only. It may not provide full service life". I would love to have the nuclear ones that CASIO recommended!!!!

 

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• Nov 29, 2012

1
• #9

Compositepro

Chemical

Oct 22, 2003

7,826

The manual says you should get 17,000 hours of continuous display. So the batteries are super-sized for the application. If you test the batteries they would probably be considered "dead" for most applications.

http://support.casio.com/pdf/004/fx100MS_115MS_E.pdf

 

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• Nov 29, 2012

• #10

telecomguy

Mechanical

Jan 4, 2006

274

17000 hours continuous would provide you 1 hour per day for 46 years. Not bad. )

 

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• Nov 29, 2012

• #11

VEBill

Military

Apr 25, 2002

7,090

This thread is making me want to dig out my old calculators from the 1970s and fire them up.

They'll probably need new batteries.

 

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• Nov 29, 2012

• #12

MacGyverS2000

Electrical

Dec 22, 2003

8,504

oliamel said:

I'm not a battery expert but the code "C8501" could it be the supposed expiry date [Jan '85].

Click to expand...

That's awfully close to a battery type designator...

CR would mean lithium manganese dioxide chemistry, but you have just C. 8501 would be dimensions of 85mm x 01mm. I'm going to guess the battery doesn't look like that

Dan - Owner

http://www.Hi-TecDesigns.com

 

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• Nov 30, 2012

• #13

telecomguy

Mechanical

Jan 4, 2006

274

Or, "C8501" might refer to this battery spec

http://infostore.saiglobal.com/store/Details.aspx?productID=782047

 

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• Dec 4, 2012

• #14

dgallup

Automotive

May 9, 2003

4,715

I've had a number of Japanese products that came with privately branded alkaline AA batteries that lasted over a decade. The replacements never last half as long. Don't know what they put in their batteries but it's obvious the Bunny doesn't know either.

----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

 

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• Dec 4, 2012

• #15

MiketheEngineer

Structural

Sep 7, 2005

4,654

All a bunny knows is how to make more bunnies!!

 

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• Dec 4, 2012

• #16

jraef

Electrical

May 29, 2002

11,365

Or more batteries...

Most of mine leak if they have been left installed for years. It's entirely plausible to me that there is a way to make a long life battery that will survive the ravages of time if the demand on it is low. But I can see the likes of Mallory not wanting that to be the standard product design because they would not sell as many batteries.

"Dear future generations: Please accept our apologies. We were rolling drunk on petroleum."
— Kilgore Trout (via Kurt Vonnegut)
For the best use of Eng-Tips, please click here -> faq731-376

 

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