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2013-11-03
, 08:30
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Posts: 45 |
Thanked: 47 times |
Joined on Feb 2012
@ Finland - Home of Nokia & Linux
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#2
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Do you charge it via USB or AC power?
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Wonder who closed all the electronics shops tv:s (Power of infrared)
Wonder who closed all the electronics shops tv:s (Power of infrared)
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2013-11-03
, 11:40
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Posts: 198 |
Thanked: 118 times |
Joined on Apr 2012
@ United Arab Emirates, Dubai
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#3
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Originally Posted by SaQ
Hello Friend I charge it via AC power not usb !!!
Do you charge it via USB or AC power?
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N900 IS THE BEST AND THE BEST WILL BE EVER
N900 IS THE BEST AND THE BEST WILL BE EVER
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2013-11-04
, 11:51
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Posts: 198 |
Thanked: 118 times |
Joined on Apr 2012
@ United Arab Emirates, Dubai
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#4
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is there any answer ?????
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N900 IS THE BEST AND THE BEST WILL BE EVER
N900 IS THE BEST AND THE BEST WILL BE EVER
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2013-11-04
, 12:23
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Posts: 592 |
Thanked: 1,167 times |
Joined on Jul 2012
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#5
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Originally Posted by salahkhani
Shoot up a terminal on the phone, run top in it and see if you have something running steadily.
is there any answer ?????
If so, see where it is from and / or kill it
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BWizz - best N9 bookmark editing tool! Check it out ->BWizz for Harmattan
LINKer - transform your N9's home view in a Desktop, give it the freedom it deserves! -> LINKer for Harmattan
QuickBar - Can't find the app you used yesterday in your overcrowded Home Screen? Want access to the QuickLaunch bar even in the home screen? QuickBar for Harmattan
If you like our work, and would like to support via PayPal : users.giulietta@gmail.com
| The Following User Says Thank You to tortoisedoc For This Useful Post: | ||
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2013-11-04
, 12:45
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Posts: 198 |
Thanked: 118 times |
Joined on Apr 2012
@ United Arab Emirates, Dubai
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#6
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Originally Posted by tortoisedoc
thanks my friend but what do you mean by shoot up didn't get it am still new
Shoot up a terminal on the phone, run top in it and see if you have something running steadily.
If so, see where it is from and / or kill it
__________________
N900 IS THE BEST AND THE BEST WILL BE EVER
N900 IS THE BEST AND THE BEST WILL BE EVER
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2013-11-04
, 12:56
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Posts: 198 |
Thanked: 118 times |
Joined on Apr 2012
@ United Arab Emirates, Dubai
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#7
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for example watch youtube and charging it is draining the battery or using wazzapp and charging is the same so i have to let it charge fully in order to use again
very strange
very strange
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N900 IS THE BEST AND THE BEST WILL BE EVER
N900 IS THE BEST AND THE BEST WILL BE EVER
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2013-11-04
, 13:32
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Posts: 6,453 |
Thanked: 20,983 times |
Joined on Sep 2012
@ UK
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#8
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It's simple maths. The CPU voltage is constant. I don't know how much it is for the N9 but let's assume 3.3V for the sake of illustration. Then let's assume that a CPU busy with something intensive like watching Youtube takes 500mA. Power = voltage * current, so in this case 3.3V * 500mA = 1.65W.
Now, a nearly full battery has about 4.2V. How much current does the device draw from it? The same formula applies, power = voltage * current, i.e. current = power / voltage. 1.65W / 4.2V = 393mA. That assumes a 100% efficiency, but let's ignore that for now to keep things simple.
How does the situation change with a nearly empty battery? To start with, the voltage can drop to as little as 2.7V. How much current does the phone drain from it? 1.65W / 2.7V = 611mA.
What does that tell us? Imagine your wall charger is capable of delivering 600mA. In the "battery full" case, it has 600mA - 393mA = 207mA to spare to charge the battery. In the "battery empty" case, it has 600mA - 611mA = 11mA missing! So, your phone continues draining the battery even when on a charger.
The solution is simple. Either stop using power-hungry applications (phone calls, big downloads, anything CPU-intensive...) or get a charger that can supply more current.
Please remember that my numbers are made up, just for illustration. Someone might have the correct numbers, but the general idea would remain the same.
Now, a nearly full battery has about 4.2V. How much current does the device draw from it? The same formula applies, power = voltage * current, i.e. current = power / voltage. 1.65W / 4.2V = 393mA. That assumes a 100% efficiency, but let's ignore that for now to keep things simple.
How does the situation change with a nearly empty battery? To start with, the voltage can drop to as little as 2.7V. How much current does the phone drain from it? 1.65W / 2.7V = 611mA.
What does that tell us? Imagine your wall charger is capable of delivering 600mA. In the "battery full" case, it has 600mA - 393mA = 207mA to spare to charge the battery. In the "battery empty" case, it has 600mA - 611mA = 11mA missing! So, your phone continues draining the battery even when on a charger.
The solution is simple. Either stop using power-hungry applications (phone calls, big downloads, anything CPU-intensive...) or get a charger that can supply more current.
Please remember that my numbers are made up, just for illustration. Someone might have the correct numbers, but the general idea would remain the same.
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2013-11-04
, 13:38
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Posts: 198 |
Thanked: 118 times |
Joined on Apr 2012
@ United Arab Emirates, Dubai
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#9
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Originally Posted by pichlo
Thanks Fellow for your explanation but no wonder how it is draining the battery that fast.. I have not noticed that on N900 or previous nokia phones
It's simple maths. The CPU voltage is constant. I don't know how much it is for the N9 but let's assume 3.3V for the sake of illustration. Then let's assume that a CPU busy with something intensive like watching Youtube takes 500mA. Power = voltage * current, so in this case 3.3V * 500mA = 1.65W.
Now, a nearly full battery has about 4.2V. How much current does the device draw from it? The same formula applies, power = voltage * current, i.e. current = power / voltage. 1.65W / 4.2V = 393mA. That assumes a 100% efficiency, but let's ignore that for now to keep things simple.
How does the situation change with a nearly empty battery? To start with, the voltage can drop to as little as 2.7V. How much current does the phone drain from it? 1.65W / 2.7V = 611mA.
What does that tell us? Imagine your wall charger is capable of delivering 600mA. In the "battery full" case, it has 600mA - 393mA = 207mA to spare to charge the battery. In the "battery empty" case, it has 600mA - 611mA = 11mA missing! So, your phone continues draining the battery even when on a charger.
The solution is simple. Either stop using power-hungry applications (phone calls, big downloads, anything CPU-intensive...) or get a charger that can supply more current.
Please remember that my numbers are made up, just for illustration. Someone might have the correct numbers, but the general idea would remain the same.
thanks for the explanation
__________________
N900 IS THE BEST AND THE BEST WILL BE EVER
N900 IS THE BEST AND THE BEST WILL BE EVER
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2013-11-04
, 17:05
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Community Council |
Posts: 4,920 |
Thanked: 12,867 times |
Joined on May 2012
@ Southerrn Finland
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#10
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Originally Posted by salahkhani
Of course it does not do this normally.
Thanks Fellow for your explanation but no wonder how it is draining the battery that fast.. I have not noticed that on N900 or previous nokia phones
thanks for the explanation
You may have some process that's eating up all your CPU and hence it's drinking up the juice quickly.
That can happen on other platforms too
Just check your top for CPU hogs.
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I have recently owned N9 along side with my monster N900 and am very happy
Everything is ok with the device except that I found that while the battery is almost empty and connect it to a charger to use the device, it is not charging
so is there any solution for this cuz it's really odd that all mobile phones can be used while charging it only this device i cannot use it while charging and battery indicator not showing that its charging more than half
Please advice
N900 IS THE BEST AND THE BEST WILL BE EVER