Wonder if anybody has a similar problem.
I use my XDA for work, guessing a lot of people do that, doh! And I work in a warehouse/ outside in UK.
Anyway here goes. By cold temperatures, I mean British weather! Which is in the positive Celcius range, so not that cold..
Last night it happened again. I was out in a field near Hull, working! I made a phone call, then the battery light goes red, 10% battery. In a field how do I charge it!! Simple, stick it in my pocket to warm it up. Within minutes the XDA has 60% again!!
Please any tips or similar experiences. I know that the summer is coming so things look up. But what happens when Autumn comes around again, well my contract is up, so a new phone I do believe!!!! And the XDA will just be a pocket PC, to keep in doors in the warmth.... Maybe a sony...
Martin
Cold and batteries
From: http://www.argreenhouse.com/papers/tony2/ECS00_Bond_Untr.pdf:
Tests of low-temperature discharge rate capability of various commercial Li-ion batteries showed that on average only ca. 30 % of battery capacity can be obtained at a C/2 rate at a temperature of -20 Celsius, and less than 10 % at 1C. Batteries described in this work exhibited higher capacity at C/2 at -20 Celsius (Fig. 10) than most of the recent commercially available Li-ion batteries tested. The discharge rate capability of these samples was a strong function of temperature; at a 2C rate, the capacity utilization decreased from ca. 90 % at 21 Celsius to 24 % at 0 Celsius and less than 2 % at -20 Celsius. In the above example, the C/2 capacity was 99, 95 and 37 % at 21, 0 and -20 Celsius, respectively.
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(A discharge rate of 1C means "as many Amps as there are AmpHrs in the battery, i.e. theoretically discharging the battery in exactly one hour.)
Polar equipment often has separate battery holders: device out in the open where fingers can touch it, batteries inside insulated clothing with warm human. Tummy or inside of upper leg are warmest...
Thank you
That answers the question then.
Their developing better batteries....
Anybody else have similar experiences though...
Martin
Get yourself a battery pack - runs off 4 AA's. (Search ebay under xda). Absolutely invaluable for traveling.
Regards
Tim
Related
A lot of problems are related to old batteries and when buying new ones you don't know how "new" they are and if the keep their promise.
Worry no longer, with just
mortscript
your device
your battery (or more)
and a spreadsheet (optional)
you can take control of the facts.
The method is descibed in this generic thread.
There you also find the files you need and some apetizers to start.
Method specific discussions go there please!
Please report here in this forum only the results of your measurements in the following format:
Battery type (Producer + Model)
Battery serial number
nominal capacity (in mAh)
your device (it should only be Hurricane here!)
rundown time to 10% capacity with the standardized conditions as descibed in the generic thread
attach the file if you like, but I will not collect them
My current drain measurement for the Hurricane is:
full lit display: 88 mA
dim display: 80 mA
display on, but no backlight: 60 mA (!!)
Let me start with my data:
Code:
Type Battery Serial Battery Capacity [mAh] PBA File 10% time [s]
Samsung-ST26A 5yex149f000725 1050 Hurricane battery-data-1265006544.csv 30202
Sanyo ST26C at3a359w000642 1150 Hurricane battery-data-1264765063.csv 40567
Sanyo ST26C at3a359y001882 1150 Hurricane battery-data-1264865986.csv 42281
Sanyo ST26C at3a35cm000832 1150 Hurricane battery-data-1264926866.csv 40097
Sanyo ST26C at3a35am000417 1150 Hurricane battery-data-1264809237.csv 37302
I must tell you that the Hurricane discharge graph is the worst I have seen for all my measurements. Down to 60% it is roughly linear, but you are cheated as the 60% is in reality much less and the remaining % are eaten very fast!
enjoy!
Using the curvefish battery monitoring widget from the market I cap out at:
100% @ 4344 mV
94.2 Degrees
Anyone else?
Sounds about right
Had about the same thing got up to 40 or 42 celsius which is like 108f i think
Sent from my EVO 3D
Went up to 110f while laying on its back, charging and running 4G/hotspot.
Stood it up in a holder, aimed a fan at it and watched it drop slowly to 88.3f/4.348v
I've noticed a wide difference in battery operating temperatures between different manufacturers. One battery consistently runs at 25 degrees C while another one runs at 38 to 40 degrees C. I'm worried that while using the higher temperature battery that I'm damaging my phone. Should I discontinue using the higher temperature battery?
rlu2 said:
I've noticed a wide difference in battery operating temperatures between different manufacturers. One battery consistently runs at 25 degrees C while another one runs at 38 to 40 degrees C. I'm worried that while using the higher temperature battery that I'm damaging my phone. Should I discontinue using the higher temperature battery?
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I find anything over 35C to be uncomfortable, but is that temp what the battery rated for or actually produces? It was my understanding that that was the temp it could safely withstand.
rlu2 said:
I've noticed a wide difference in battery operating temperatures between different manufacturers. One battery consistently runs at 25 degrees C while another one runs at 38 to 40 degrees C. I'm worried that while using the higher temperature battery that I'm damaging my phone. Should I discontinue using the higher temperature battery?
Click to expand...
Click to collapse
I can tell you from experience that HTC phones will shut themselves off before they can damage the phone or the battery. The battery has a much lower temperature range of operation than just about anything else. IC are virtually untouched by heat below 90c. At that point, the mode of failure tends to be a degradation in the doped silicon that the transistors are made off, and it usually happens over time, not instantaneously.
Thank you!
Thank you for your very informative reply!
I have redmi note 4 . During charge my phone it becomes hot.. i installed cpu z to check temperature...I found that chg-temp is 55 degree during charge and 46 degree without charge in draining ....so is that normal or not
Depends on ambient temperature but 46 degrees is way too high. It runs cooler even when doing heavy tasks like gaming even when playing asphalt 8 it never exceeds 40 degrees. It becomes more hot when charging although it never exceeded 43 degrees while charging. It is one of the coolest device.
55 degrees is way too high it never touch that when holding it under the direct sunlight in summers when outside temperature is around 50 degrees. In this condition mine mine never exceeded 50 degrees.
I reach 40°C when charging, playing EverWing, and listening to Spotify for 2-3 hours non-stop. Granted I'm indoors with ambient temperature of around 20°C. Charging, playing, or watching videos outside in direct sunlight will greatly increase SOC temperature, specially if your phone is the black variant.
In Egypt ambient temperature reaches 35 c so is it affect my cell phone temp
Also I am asking about charge temperature in cpu z program.....other temperature in my device don't reach 40 c but only chg-temp reach 55 c
hshanafy said:
Also I am asking about charge temperature in cpu z program.....other temperature in my device don't reach 40 c but only chg-temp reach 55 c
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Ignore it. Its fine. Not for our use. One of the temp in this showing 78 degrees.
Summer has arrived, the battery temperature has been around 38 °, because of the thermal engine the charging speed is only 2000 + mA, under normal it should be 4000 + mA
version:Android 13 beta 2
Thermal throttling of battery charging is a safety feature. I recommend not trying to override it.
Azusasen said:
Summer has arrived, the battery temperature has been around 38 °, because of the thermal engine the charging speed is only 2000 + mA, under normal it should be 4000 + mA
version:Android 13 beta 2
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Click to collapse
yeah if you disable thermal throttling and let it charge fast the battery will degrade faster because of high heat. If you really want to charge fast while not destroying your battery you could buy one of those Black Shark coolers for around $30, I got the funcooler 2 and my temps went from 38-40 down to around 17° (it'll be even cooler if you leave it running for a while). For a more inexpensive option you could just put an ice bag on the back of the phone