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Weird Charging Problem |
BULL3TPR00F
Joined: Jan 03, 2007
Posts: 47
From: Ontario, Canada
PM |
Hey guys. Heres something weird i noticed. Sometimes when my battery dies out completely and i hook it up the the charger, the screen turns on but remains white. It eventually turns off after some minutes. Why is the screen going white as opposed to turning on the phone and displaying the charging window? (also the red LED in the IR sensor is lit as well)
I have tried unplugging the cable and pluging it back in but i styll get a white screen.
After a few tries or after leaving the charger in for a bit then unplugging it and plugging it back in again, it then works and goes to the charging screen.
any ideas why this is? Not sure if its a problem or something that they do sometimes if the battery is too dead to turn on.
Also the phone is fairly new, about less than a week. |
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BobaFett
Joined: Jan 06, 2004
Posts: > 500
From: Kamino (wish it would be Lund)
PM, WWW
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what fone is it?
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BULL3TPR00F
Joined: Jan 03, 2007
Posts: 47
From: Ontario, Canada
PM |
oh my mistake, i figured that since i had selected my phone in my profile for this account the picture would show up by my name, but its not for some reason.
anyways its a K790a
EDIT: Just checked the settings. Didn't realize i needed 10 posts first before it shows up  lol
[ This Message was edited by: BULL3TPR00F on 2007-01-08 19:34 ] |
LEVO 75
Joined: May 03, 2006
Posts: 56
PM |
You shouldn't fully drain a LITIUM ION battery.
It isn't like a nickel cadmium battery.
So you DON'T have to worry about memory effect.
Just charge it every night.
PS: if it doesn't work then either,
then it's because you toch yourself at night. |
firetech
Joined: Dec 09, 2006
Posts: 295
From: Lund, Sweden
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Quote:
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On 2007-01-09 14:47:21, LEVO 75 wrote:
So you DON'T have to worry about memory effect.
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Actually, you do. You shouldn't fully drain it, but you shouldn't charge it as soon as you get to a power supply... My father did just that with his old laptop, and after a year or two, his battery wouldn't live longer than 5 minutes. I just checked it (on the laptop itself), it had a Li-Ion battery. Proper care of those is to charge when it's almost empty, definitely not entirelly empty, but about 5-10% left.
Although, from what I've heard, Li-Polymer batteries handle this better, and the K800/K790 might have such a battery since the P990 has one.
_________________
P990i + 1GB MS + CAR-100 (+ Z600 to charge and start the CAR with)
I  my P990i
[ This Message was edited by: firetech on 2007-01-09 14:25 ] |
BULL3TPR00F
Joined: Jan 03, 2007
Posts: 47
From: Ontario, Canada
PM |
alright thanks guys, ill start plugging it in at the first low battery warning i get.
also i just checked, it has a Lithium Polymer battery |
hanugro
Joined: Feb 28, 2005
Posts: > 500
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SE has used Li-Poly for few years. My S700 is Li-Poly and T-630 as well (if I am not mistaken).
Anyway Li batt don't have memory effect but all batt have a lifetime. Li usually has 500-1000 cycle/charge limit before it start loosing the performance. That is why usually batt life is between 1-3 years.
Well I think charging your phone twice a day or just when the batt turn amber (about 20%) will provide long life. My old T610 that is used by my mother is still on its original batt (3+ years now).
Edit: SE said that it is normal to take about 30m before phone indicate charging after you plug it. Anyway check your K790 EROM. With older than R3A016 you will never want the batt to completely drain. It can cause WSOD.
[ This Message was edited by: hanugro on 2007-01-10 01:10 ] |
*Jojo*
Joined: Oct 15, 2003
Posts: > 500
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@bullet - Don't DRAIN the battery mate . . . leave at LEAST one or TWO bars on it . . . I heard from a friend that his K610i - DIED . . . . . he later found out that it was because he's DRAINING the battery most of the time he uses his fone . . .
[addsig] |
BULL3TPR00F
Joined: Jan 03, 2007
Posts: 47
From: Ontario, Canada
PM |
@ hanugro,
I checked my EROM and it is R3A016
@ *Jojo*
alright will do, thanks for the heads up.
[ This Message was edited by: BULL3TPR00F on 2007-01-10 02:52 ]
[ This Message was edited by: BULL3TPR00F on 2007-01-10 02:53 ] |
*Jojo*
Joined: Oct 15, 2003
Posts: > 500
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@bullet - Good, good pal . . . welcome to Esato as well  !
[addsig] |
Astaroth
Joined: Jan 09, 2007
Posts: 15
PM |
Lithium Ion have no memory whatsoever - it matters not whether you cycle the battery to flat between charges or you charge it every 20 minutes. They can also be drained completely every charge without harming them, *Jojo* your friend is mistaken. As for WSOD when completely discharging that is a problem with the phone and not the battery.
*however* lithium ion batteries do have a shelf life, which is an unfortunate downside. Internal parts in lithium ion batteries oxidise over time and build resistance, which gives the exact same symptoms as battery memory. This usually takes somewhere between 2-3 years and happens fairly quickly... it appears that the battery just dies overnight. |
BULL3TPR00F
Joined: Jan 03, 2007
Posts: 47
From: Ontario, Canada
PM |
the k790a has a Lithium Polymer battery, not a Lithium Ion.
Whats the major difference between the two? |
Astaroth
Joined: Jan 09, 2007
Posts: 15
PM |
To the consumer? Not much. Lithium Polymer batteries are used mainly because they have advantages for the manufacturer. The difference is in the construction, not the chemistry... it's just that the electrolyte is a solid layer instead of a liquid solvent. They are much denser so the battery can be significantly smaller... and they don't catch on fire quite as easily (I guess that's a plus:) ) cause they don't use a volatile liquid.
Downside is they have a shelf life just like Lithium Ion, it's actually slightly shorter than a lithium ion.. Couple of other quirks, they charge a bit differently and they have a discharge point that should never be reached (3v), if you discharge on load beyond this the cell won't charge again. But your phone should be set up to handle all this stuff..
Basically they're just an advanced form of lithium ion battery, work pretty much the same just with a few minor differences..
first edit: typo!
second edit: NOTE: discharge point reference relates to lithium ion AND lithium polymer...
[ This Message was edited by: Astaroth on 2007-01-10 05:07 ]
[ This Message was edited by: Astaroth on 2007-01-10 05:13 ] |
Astaroth
Joined: Jan 09, 2007
Posts: 15
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Something I forgot to mention about the shelf life - it has NOTHING to do with use. I found a reference that says a lithium ion battery at full charge stored at 25deg celsius will lose roughly 20% of it's capacity per year... so essentially even if it's cared for very well (not exposed to heat etc) it'll be dead in 5 years. So if your battery has been sitting in a warehouse for 12 months, it's already going to be sub-optimal. |
hanugro
Joined: Feb 28, 2005
Posts: > 500
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Quote:
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On 2007-01-10 04:48:09, BULL3TPR00F wrote:
the k790a has a Lithium Polymer battery, not a Lithium Ion.
Whats the major difference between the two?
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Good that your phone has R3A016. If it was an older firmware then your k790 will be WSOD for sure. SE fix this (so I hope) with R3A016. And yes WSOD is not batt only problem but combination of faulty EROM and draining batt.
Well seems that Li-poly is more advance than Li-ion. The blow-up-batt problem seems to affect Li-ion and not Li-poly (that is what the local media told me anyway). Sony also seems to start mass produce Li-Poly for notebook (maybe difficult to make earlier because notebook batt is big compare with mobile batt) to replace those recalled Li-ion batt. Also fake Nokia batt (li-ion for sure) has the same problem.
When Li-poly first appear, ppl seems to say that it can be broken if you drop it (because it is liquid state? Li-ion seems solid?). Don't know whether they have fix this problem or not.
But I am not batt speasialist, so what I told you here is just some stuff that I heard. Anyway if you just follow my advice before then you will have a long batt life. My old T-68i, that my driver used, still use the original batt (4 years) before someone stole it 2 months ago. SE has good batt and my family own T68, T610, T630, S700, Z610, K800 and all is still using original batt. But still all batt has lifetime.
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Posted: 2007-01-08 02:59
