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Does Overcharging damages your phone?


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Posted by chuaherson
Hello guys!!

Im wondering if overcharging can damage our phones?

I use to overcharged my SE k810i lately.

Does it shortens the battery life or does the charger stop charging when the battery is full?

Anyway my charger is a CST-75

Thanks in advance!


Posted by strizlow800
I think it doesn't do any harm. I use to let all my phones charge all night and never had any issues with battery life. My W800 for e.g. is running great after 3 years.

Posted by djin
It doesnt stop over charging because if it did, then your battery wouldnt be full, thats what i think.
neways heres something i got

Will overcharging my battery hurt it ?

Yes, overcharging a battery causes it to overheat and can result in damage to the battery, causing degraded performance and eventual failure. As a general rule, do not charge a battery for more than 24 hours.


from
http://www.cellpower.com/FAQs[....]ing%20my%20battery%20hurt%20it

Posted by chuaherson
Is it ok if i overcharged my phone for several hours only?

Posted by gola

On 2008-10-18 23:06:26, djin wrote:
It doesnt stop over charging because if it did, then your battery wouldnt be full, thats what i think.
neways heres something i got

Will overcharging my battery hurt it ?

Yes, overcharging a battery causes it to overheat and can result in damage to the battery, causing degraded performance and eventual failure. As a general rule, do not charge a battery for more than 24 hours.


from
http://www.cellpower.com/FAQs[....]ing%20my%20battery%20hurt%20it

I guess this is true with most rechargeable devices?

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[ This Message was edited by: gola on 2008-10-18 22:30 ]

Posted by djin
yeah you could keep it charging over night like 8-12 hours, and i think that wouldnt hurt ur batt much, becuz i personally do that.
keep it for over night charging but not day and night, as that says, dont do overcharging over 24hrs.

But once its charged, overcharging should have some efffect, even if its lil, cuz over is mostly bad.


N yeah, thats true for all rechargeable batteries. Unless they are specially designed to stop charging once they are full.
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[ This Message was edited by: djin on 2008-10-18 22:33 ]

Posted by chuaherson
It think my charger is like that! (The one specially designed to stop charging when batt is full) because when i charge my phone the temperature of my charger rises but when it is overcharged the charger cools down like you are not using it.


Posted by Tsepz_GP
I think all cellphone batteries are specialy designed to stop charging when full, and thats why it cools down, what i noticed is that if its full and you start using it while on the charger after a while it will start charging again, so my guess is you cant "over charge" a cellphone batt.

Posted by gola
Yeah, I guess that makes sense, a bottle of water can only take so much liquid. I would've liked to support this statement with calculations and what not, but batteries are not my forte. I'm sure max-wedge can better explain this one...

Posted by djin
gola,
Take this stance,
Suppose that botle was connected to a pipe(with no loose connections and the pressure is high) and the water is let to flow in, after its full(n still connected), then its not gonna be a bottle if you would keep it long time every day.


Also chargers consume energy even when they r just plugged in.

_________________
I will be back . 2009.
(Stuck with n96 )

[ This Message was edited by: djin on 2008-10-18 23:54 ]

Posted by gola
lol hehe, I guess

Posted by dennevhyn_31
I think it stops charging if the battery is already full. I have k800i and whenever I charge the phone, the charger and the phone are both warm but it cools down if the battery is full even if the charger is still plugged in.

Posted by crossmatched
That is the beauty of OPTIMIZED charging in SE phones.

Posted by Trev1982
I hope not my P1i sits in the desk stand(with the power supply plugged in) charging all day if i aint using it lol,

Posted by chuaherson
@crossmatch

Does the text OPTIMIZED Charging related to the chargers that stops charging when it is fully charge??

But the text optimized charging is seen only when the phone is turned ON while charging..

Posted by dennevhyn_31
@crossmatched: what does "optimized charging" means? Does it mean that the charger will stop if the battery is already full? I think maybe, hehe. Optimized and full are synonymous, hahaha.

Posted by chuaherson
Well i guess. . . . .

Hehehehe

Posted by amanhotep
But in some SE,the text 'optimized' appears at the time you plug it in.
Maybe it is the firmware bug.
Don't you think 'optimized' means the battery already full?
Ha haa,I don't mind of it,as long the charging indicator still show it's progression.

Yes Bro,charge the phone all night long (leave it charge while you're sleeping) it is not damage ur battery.
I never try to charge it over 24 hours,because I need my phone almost evrytime.

Posted by gothenk

hello guys, first sorry 4 my english
I think its ok if u charge you phone while ur sleeping, coz u will not sleeping for 24 hours a day..... or somebody....... lol

Posted by carkitter
You should be careful charging a phone overnight as some nokia phones have exploded while on charge. The majority of chargers should prevent overcharging (which will damage your battery) but some cheaper chargers may not. Buyer beware!

Posted by altemyr
It was not the phones that exploded, it was the batteries in them. The reasons can be faults in the chargers or faults in the batteries.
Anyway, the text "Optimized charging" is displayed in an phone when the charger is connected and an original battery is used. In some way the phone manages to make a distinction between original batteries and other (i.e. 3:rd party vendors, pirate versions or fakes). The difference between optimized carging and non-optimised charging is that it charges original batteries with higher charging current, i.e. less charging time. Also, when the battery gets fully charged, the charger switches to maintenance mode, charging the battery with a very low current to compensate from power leakage, and thus, it's impossible to overcharge the battery with a fairly modern phone

Posted by HPkuK610i
Hello...
I've a question that maybe a lil out of topic here,but still about charging.

In SE phone,is it the vibration still working(i.e when receive call/sms) while charging?mine yes.
And im just curious,coz as far as i remember other brand don't vibrate while charging...


Oh and sorry for my english

Posted by chuaherson
Yes! Mine also is still vibrating while in charge. Older SE models dont have the capacity to vibrate while in charge! Only the latest models i think has that function! . . . . .

Posted by HPkuK610i
@Chuaherson
Thanks for the reply man...

Posted by max_wedge
guys, there is absolutely no harm in charging lithium battery based phones for as long as you like. Just feel the charger and you know if it's alright or not. If a phone has been on charge all night and the charger is NOT warm to the touch, then it obviously isn't charging is it?

And this is in fact the case. Lithium battery chargers only charge the battery until it is full, they then stop charging. So you cannot shorten your battery life or overheat the battery by leaving it on charge.

That is a fact btw, not a guess. I researched this myself when I first started using lithium batteries.

Nimh battery chargers on the other hand trickle charge the battery regardless of whether it's full or not.

Other factors to do with Lithium batteries: they do not suffer from memory affect, and do not need to be deep cycled to maintain condition. You don't have to regularly discharge lithium batteries. You can put them on charge when ever you like, and leave them on charge for however long you like and it will have little affect on battery life.

Posted by altemyr
The only "voodoo" thingie I have heard about Li-Ion batteries is that they should be charged fully the first 2-3 times they are charged, and that the charging capacitty does not reach its peak until after a couple of charging cycles.
In fact, this is not quite as "voodoo" as it might sound, since it has something to do with how the crystal structure builds up around the electrodes inside the battery.

Otherwise, I fully agree with max, just put the phone on charger at will, whenever possible and as long as is convenient.

About the vibrator function, I remember that my old T39 did not vibrate if it was placed in a table stand. I suppose that it was switched off to prevent it from jumping out of the stand maybe.
My K800i does vibrate when the charger is connected, but I haven't tried with a table stand, since I don't have one.


Posted by max_wedge

On 2008-10-27 16:58:29, altemyr wrote:
The only "voodoo" thingie I have heard about Li-Ion batteries is that they should be charged fully the first 2-3 times they are charged, and that the charging capacitty does not reach its peak until after a couple of charging cycles.
In fact, this is not quite as "voodoo" as it might sound, since it has something to do with how the crystal structure builds up around the electrodes inside the battery.

Otherwise, I fully agree with max, just put the phone on charger at will, whenever possible and as long as is convenient.

About the vibrator function, I remember that my old T39 did not vibrate if it was placed in a table stand. I suppose that it was switched off to prevent it from jumping out of the stand maybe.
My K800i does vibrate when the charger is connected, but I haven't tried with a table stand, since I don't have one.

yes they probably do take a recharge or two before reaching full capacity. But the difference is small. I put on charge everynight, so by the time a few days have passed the phone has been well charged.

I don't think they have to be fully charge cycled the first few times ie: discharged fully then charged back up again. I think they just need to be fully charged ie: charged from whatever level they are at, to full charge.

Posted by Bialynia
New phones use lithium batteries, you can charge them as long and as often as you want without degradation, this was not the case before Lithium batteries.

Posted by DJ Saloma
Sometimes my K850i remains connected with charger for whole night, but nothing happens to battery! Instead, its life time increases!

Posted by chuaherson
LOL

Posted by Hek7or
The phone automatically cut the power from charger when its fully charged.... even if it's turned off and charging...


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