Breaking News
Comments
Oldest First | Newest First | Threaded View
Page 1 / 2   >   >>
ehat
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
ehat   12/12/2012 1:23:47 PM
NO RATINGS
Radio Shack EC-4028 Calculator bought in ~92-93. Changed batteries in 8/12. Didnt have to but the screen was getting a little light.

daustins
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
daustins   12/12/2012 4:17:34 PM
NO RATINGS
In 1981 I got a Casio hand calculator: LCD display, running on one AA battery. I never turned the power switch off. I used it daily for a decade and after 25 years found it, and it was still functioning. Under a quarter century of grime. I recall over 30 years ago when the first chip was released for flashing an LED with a very short duty cycle. It was postulated that the batteries (way before Lithium-ion and when NiCad was the Gold Standard) would last longer with a very slight current drain. It seems they were right.

davewooff
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
davewooff   12/12/2012 4:26:20 PM
NO RATINGS
Not sure about longest lasting battery but it always makes me smile when I see a single AA battery quartz clock on a wall struggling to overcome gravity with the big hand stuck at about 20 minutes to the hour still ticking away.

RogerAW
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
RogerAW   12/12/2012 5:09:39 PM
NO RATINGS
Today is the 21st anniversary of our 2 Sharp EL-506H calculators which are still running on their original batteries.

IDontUseTheForumSoWhyAmIForc
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
IDontUseTheForumSoWhyAmIForc   12/12/2012 5:40:20 PM
NO RATINGS
When a quartz clock can no longer keep the arms moving its time to finally retire the battery. When I have a remote control or other device with an (allegedly) dead battery, I save it for use in the wall clock. I can usually get another couple months of power using the battery in the clock before it finally 'gives up the ghost'

bkeller137
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
bkeller137   12/12/2012 5:57:03 PM
NO RATINGS
Across the hall from me, my colleague has an hp-15C calculator that he has had since college 25+ years ago that is still going on the original button batteries. He does only use it a few times a month on average, but still, that is a long time.

Brian Fuller2
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
Brian Fuller2   12/12/2012 6:36:09 PM
NO RATINGS
Separate application, but my father bought a Sony transistor radio in the 1960s... one of the earliest. We still have it. It still works like a charm. We listened to some historic events on that thing...

Battar
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
Battar   12/13/2012 7:36:59 AM
NO RATINGS
My 1988 Fluke 73 DMM lasted a very long time on its' original battery. A Casio digital watch also lasted nearly 10 years on its' lithium coin cell. Most batteries now would self discharge before then.

matthew43
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
matthew43   12/13/2012 5:06:45 PM
NO RATINGS
I have a HP-15C calculator and a HP-12C. I haven't used them much in the last 7 years but when I pulled them out they still work. I didn't buy either one new so I can't tell you how old the batteries are except they are both more than 7 years. Some SOB stole my HP-15C about 12 years ago so I had to buy one on eBay. Why would an EE use any other calculator?

K1200LT Rider
User Rank
Rookie
re: Silicon Valley Nation: 30-year battery life? Really?
K1200LT Rider   12/13/2012 5:21:56 PM
NO RATINGS
I'm afraid to leave common, alkaline batteries in anything nowadays for very long without regularly checking them. I have had so many things destroyed when they leak and/or grow the white chemical "fuzz". It's really frustrating. Do modern-day batteries do this more than they used to?

Page 1 / 2   >   >>


EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Creating New Faceplates for Antique Analog Meters
Max Maxfield
40 comments
I've currently got a couple of hobby projects on the go that feature the use of antique analog meters. For example, there's my Inamorata Prognostication Engine and its companion, the ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
11 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
11 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
45 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)