 Subaru1-3-2-4Premium
join:2001-05-31
Greenwich, CT | Electronics that stop working when cold So it was my mistake for not reading most of the reviews since the new reviews started coming in during the colder months.. but anyways with new batteries and all this tire pressure gauge I has will not come on until it's warmed up above 20-26 F
So, I wonder what's keeping it from working under those temps.. I know most chips have operating limits as far as temperature but why? |
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 alphapointeDon't Touch MePremium,MVM
join:2002-02-10
Columbia, MO
kudos:2
 ·Socket Internet ..
| More likely it's the battery not producing enough voltage when it's that cold... I know some of my radio batteries gripe when I walk to work and it's really cold, then be fine once they come back up to room temp...
(my scanner is REAL bad about this... I've come to accept the "low battery beep" as normal when walking to work when it's below freezing)
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"When the hammer drops, the bullshit stops" |
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Subaru1-3-2-4Premium
join:2001-05-31
Greenwich, CT | Well they use CR2032's two of them. |
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Just troubleshoot and figure it out. 
Normally, batteries are more affected by cold than most other electronic parts, but it shouldn't be too difficult to figure out the culprit.
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Wacky Races 2012! |
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 tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:8 | reply to Subaru
It is probably not the gauge electronics itself or the batteries but rather the LCD display. They don't like the cold.
/tom |
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 SparkChaserPremium
join:2000-06-06
Downingtown, PA
kudos:3
 ·Verizon FiOS
| reply to Subaru
said by Subaru: has will not come on until it's warmed up above 20-26 F Got the same problem with my body.
Here's Maxell's battery, not too much variation with temp.
As Tom said it's a good chance it's the LCD
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"Facts do not cease to exist because they are ignored." - Aldous Huxley
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b10010011Whats a Posting tag?
join:2004-09-07
Bellingham, WA Reviews:
 ·Comcast Formerl..
| reply to tschmidt
said by tschmidt:It is probably not the gauge electronics itself or the batteries but rather the LCD display. They don't like the cold.
/tom
The L in LCD does stand for Liquid after all. 
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Bellingham Scanner Kicks Ass! »bhamscanner.kicks-ass.org/ |
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 alkizmo
join:2007-06-25
Pierrefonds, QC
kudos:1 | reply to SparkChaser
said by SparkChaser:Here's Maxell's battery, not too much variation with temp.
That chart is at 0c
0c is not an issue.
My iphone's battery went from 100% to 0% sometime during the 6 hours I left it in my car at -20C |
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Reviews:
·AT&T U-Verse
| said by alkizmo:That chart is at 0c
Goes to -10C (14F).
I'll do a test just because I can and I'll post the results. |
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Subaru1-3-2-4Premium
join:2001-05-31
Greenwich, CT | reply to Subaru
You can see it here
»www.amazon.com/gp/product/B000B6···_s00_i01 |
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Subaru1-3-2-4Premium
join:2001-05-31
Greenwich, CT | reply to tschmidt
said by tschmidt:It is probably not the gauge electronics itself or the batteries but rather the LCD display. They don't like the cold.
/tom
if my car's LCD display works in 12F then it should be no reason for this |
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 TA63ST215WPremium,MVM
join:2000-11-23
there
kudos:2 | I don't think that is a valid comparison.
The standards for automotive electronics are much higher than those for a throwaway tire pressure gauge.
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The talented hawk speaks French. |
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| reply to Subaru
A battery operated tire pressure gauge? WHY? |
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Subaru1-3-2-4Premium
join:2001-05-31
Greenwich, CT | because it had a feature I wanted |
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Reviews:
·AT&T U-Verse
| reply to cowboyro
Took a 2032 cell. From room temperature to -5F in the freezer and back to room temperature the voltage was between 3.33 and 3.34V (more precisely 3.332 and 3.342). There was an initial jump in voltage after putting the battery in the freezer that lasted about 10min, the the voltage decreased to 3.336-3.338V. After bringing it back to room temperature the voltage stabilized again to ~3.332V.
BORING.... |
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TA63ST215WPremium,MVM
join:2000-11-23
there
kudos:2 | That was an unloaded voltage? |
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| Yes, no load... |
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| Batteries produce electricity using a chemical reaction. When it is cold, the reaction slows down. This means that with no load the voltage will be mostly unchanged. But under load the battery will produce less power (fewer amps). I don't have enough experience to say how much less power to expect. But I have heard of cars in cold climates having an additional car battery because one battery might not be enough to start a car in very cold climates.
The same logic would say that adding an additional battery might be helpful. But realistically it might be easier to leave the electronic gauge at home and take it out for only a few minutes. |
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lutful... of ideasPremium
join:2005-06-16
Ottawa, ON Reviews:
·TekSavvy DSL
| reply to Subaru
said by Subaru:with new batteries ... will not come on until it's warmed up above 20-26 F All batteries have internal resistance which goes up as temperature goes down. Above chart is for rechargeable batteries but gives you an idea of what happens to the power output below some threshold temperature.
said by Subaru:I know most chips have operating limits as far as temperature but why? Chips (digital or analog) are really a whole bunch of circuit elements. The behavior of each of those elements depends on temperature. |
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SparkChaserPremium
join:2000-06-06
Downingtown, PA
kudos:3 Reviews:
·Verizon FiOS
| reply to alkizmo
said by alkizmo:That chart is at 0c The chart is from 60 to -10C @ 15K load LiMnO2 chemistry
I have a LiPo cell sending me temp data from the front of the house and it's -8C outside. I've had it in the freezer for over 24 hrs @ -16C and sending data.
I have no experience with iPhones.
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"Facts do not cease to exist because they are ignored." - Aldous Huxley
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