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05-31-2015, 06:58 AM
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#1
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jun 2008
Posts: 13,150
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A 25 Year Old Battery
I was going through some of my stuff in my desk drawer and found an old Sharp scientific calculator. This is a battery only (non-solar) calculator that I got at a college bookstore about 25 years ago.
Much to my surprise, when turning it in, the calculator still works. Though I haven't used it in that long, I expected the calculator wouldn't turn on after all these years.
If only a battery could last so long in my LCD fever thermometer .
Update: More like about 30 years than 25. I'm older than I think
Oh, here's website down down calculator memory lane.
Calculator Museum
The model I have is the Sharp EL 506H. The main reason got this (at that time a major purchase for me) was the ability use hex!
__________________
Have you ever seen a headstone with these words
"If only I had spent more time at work" ... from "Busy Man" sung by Billy Ray Cyrus
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05-31-2015, 09:38 AM
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#2
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Full time employment: Posting here.
Join Date: Jan 2011
Posts: 586
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It will be interesting to find out how much has the battery voltage dropped. Your calculator may be working at lower voltage.
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05-31-2015, 10:09 AM
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#3
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Thinks s/he gets paid by the post
Join Date: Nov 2011
Posts: 3,905
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Those calculators can operate with a miniscule amount of energy. I have one now 29 years old I use regularly and the original battery still powers it.
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05-31-2015, 12:00 PM
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#4
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jun 2008
Posts: 13,150
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When I bought that calculator, I almost decided against the purchase (remember, I was on a college kid budget) for fear the calculator was a battery hog. Well, about 30 years later, I suppose no more need to worry .
My calculators that I use now (yes, a physical calculator and not a phone or on the computer) are a solar TI-1795 that's been going about 20 years and counting, and a combo solar/one-AA battery operated Office Depot calculator.
__________________
Have you ever seen a headstone with these words
"If only I had spent more time at work" ... from "Busy Man" sung by Billy Ray Cyrus
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05-31-2015, 12:24 PM
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#5
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: May 2008
Posts: 6,506
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HP 12C I bought around 1984, last year it needed new batteries. Most impressive.
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There must be moderation in everything, including moderation.
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05-31-2015, 02:14 PM
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#6
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Thinks s/he gets paid by the post
Join Date: Oct 2009
Posts: 2,012
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Yeah but my slide rule still works as well as it did many years ago. At least if I could read the little lines and numbers it would.
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05-31-2015, 03:00 PM
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#7
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: May 2008
Posts: 6,506
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I found it hard to hold a magnifier and push the slide around, which is why I gave up the slide rule. Eventually will need calculator with bigger buttons and display
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There must be moderation in everything, including moderation.
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05-31-2015, 04:16 PM
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#8
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Moderator
Join Date: Dec 2007
Location: Eastern WV Panhandle
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__________________
When I was a kid I wanted to be older. This is not what I expected.
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05-31-2015, 04:52 PM
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#9
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: May 2008
Posts: 6,506
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Nice find.
I hope by the time I need it there will be one which will project through my glasses and I just have to think the numbers to manipulated and likewise for what calculations to perform.
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There must be moderation in everything, including moderation.
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05-31-2015, 08:57 PM
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#10
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jul 2008
Posts: 35,712
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Quote:
Originally Posted by easysurfer
... The model I have is the Sharp EL 506H. The main reason got this (at that time a major purchase for me) was the ability use hex!
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Hey, that looks almost like a Sharp that I still have, but mine got a small photovoltaic panel.
I bought it sometimes in the late 70s, when I was in graduate school. I still have it, but am on travel and cannot look to see if it has a small button battery in addition to the solar panel.
More recently, a few years ago, I saw a cheap Chinese calculator with the same keypad layout and with exactly the same functions in a dollar store. For 99c, I could not pass it up and bought it, though I did not know what to use it for.
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"Old age is the most unexpected of all things that happen to a man" -- Leon Trotsky (1879-1940)
"Those Who Can Make You Believe Absurdities Can Make You Commit Atrocities" - Voltaire (1694-1778)
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06-01-2015, 08:50 AM
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#11
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Full time employment: Posting here.
Join Date: Oct 2014
Posts: 568
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Thats neat.
My TI59 Battery Pack will still hold a charge if I recharge it. And the motor still works too. I might try to see if any of the magnetic cards still hold data, although I'll have to refresh my memeory on the procedure.
_B
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06-01-2015, 09:57 AM
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#12
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Mar 2011
Posts: 8,420
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Funny. I have a digital bathroom scale that has to be 27 or 28 years old. NEVER changed the batteries even after hopping on it just about every day.
I was thinking about "how long will these batteries last?" just last week.
Next scene.......
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Living well is the best revenge!
Retired @ 52 in 2005
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