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Battery issue with my netbook.

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#1
My netbook is a Samsung n145 and has 8 months

The problem is that in some cases, the battery percentage drops suddenly from 25% to 5% approx. (the values can change) and the netbook shuts down. The battery in some cases is totally fine and lasts 6 hours or more.

I saw that the wear level was at 10% but yesterday, after a charge, increased to 19%.

I've read that those symptoms are because of uncalibrated control system of the battery, I've never calibrated the battery, I have understand that you have to fully drain it, then fully charge it to get the control system proper reading, right?


Any advice would be appreciated, many thanks :)
 

FreedomEclipse

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#2
since youve only had it 8 months. you can rma the battery for another one.

I think its something to do with the sensor in the battery that has gone bad. If you dont want to do that then, look for a cheap replacement battery on ebay
 

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#3
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#4
yeah after about 8 month my battery indicator showed about 70% but still run about 4 hours in heavy task but after a year it really drop until 5% so i need to replace that
and in your case you look have a bad battery
its still in warranty so ask for rma the battery
 
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#5
Many thanks :)

Tinkering with the BIOS I noticed a option that says "Smart battery calibration" (Just noticed now)

When I enter to it appears this



(Sorry for the crappy drawing I don't have a camera) :(

What does this do? I don't understand :confused:


if after the calibration the problem continues then I will RMA the battery.
Many thanks :)
 
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#6
calibration is to detect the real capacity of your battery so it can read right
 

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#7
since youve only had it 8 months. you can rma the battery for another one.

I think its something to do with the sensor in the battery that has gone bad. If you dont want to do that then, look for a cheap replacement battery on ebay
I was thinking if he might not be able to RMA it for that reason. For example they always say up to 6 hours.


Maybe check if Sol Computer's will buy it of you J/K.
 
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#8
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#9
I was thinking if he might not be able to RMA it for that reason. For example they always say up to 6 hours.


Maybe check if Sol Computer's will buy it of you J/K.
or try drain your battery and recharge it and does it charged full?
if it show under 100% or <95% you have bad battery :wtf:
 
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#10
or try drain your battery and recharge it and does it charged full?
if it show under 100% or <95% you have bad battery :wtf:
I've never fully drain it because I have read that was bad for the battery, I always charged it when it reached 20%
when I charge it always indicates 100% (unless I enable battery life extender, which then it reaches 80% and stops).

I will do what that manual indicates then I will comment the results :)
Many thanks :)

EDIT:
Asrock what does mean "Maybe check if Sol Computer's will buy it of you J/K". :confused:
Are you referring to this company (http://www.solcomputers.co.uk/ ) ?
Thanks :)
 

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#11
Fully draining is GOOD for the battery, it makes the cells last longer. charging constantly when the battery is full or near full just wears the battery out quicker. as it f**ks up the cells.

if the battery has been working fine until now. Id just put it down to the battery being bad and RMA'ing it.

its not a case of how long the battery lasts but what the battery is reporting when its plugged in.

Unless youve really abused that battery
 

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#12
I've never fully drain it because I have read that was bad for the battery, I always charged it when it reached 20%
when I charge it always indicates 100% (unless I enable battery life extender, which then it reaches 80% and stops).

I will do what that manual indicates then I will comment the results :)
Many thanks :)

EDIT:
Asrock what does mean "Maybe check if Sol Computer's will buy it of you J/K". :confused:
Are you referring to this company (http://www.solcomputers.co.uk/ ) ?
Thanks :)

When you drain the battery you will lose a few % of the total battery although it should correct it with the right value's.


Bad joke i guess from some thing that Qubit posted ( as in maybe they would buy it as seen they sell shit for more than there worth )
http://www.techpowerup.com/forums/showthread.php?t=152321
 
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#13
Fully draining is GOOD for the battery, it makes the cells last longer. charging constantly when the battery is full or near full just wears the battery out quicker. as it f**ks up the cells.

if the battery has been working fine until now. Id just put it down to the battery being bad and RMA'ing it.

its not a case of how long the battery lasts but what the battery is reporting when its plugged in.

Unless youve really abused that battery
Well it would behave like this long time but I've annoyed now!
No I didn't abused it (I think) :)

Many thanks for the advice I will take it :)

When you drain the battery you will lose a few % of the total battery although it should correct it with the right value's.


Bad joke i guess from some thing that Qubit posted ( as in maybe they would buy it as seen they sell shit for more than there worth )
http://www.techpowerup.com/forums/showthread.php?t=152321
Holy sh*t
749$ :confused:
Mine, which is the same, costed me 240€ :laugh:
Many thanks :)
 
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#14
Done. I used it all day at high performance and the battery % lowered smoothly without that gap. The battery is fine. It simply was uncalibrated. But the wear level remains though the battery lasts very long. I saw many people having similar level with 6 cell battery after 6 months (even worse)

Thanks to all :)
 

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#15
well its good to hear that the calibration fixed the problem. Ive heard of battery calibration with a few smart phones, but I didnt think netbooks or laptops had something like that
 
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#16
well its good to hear that the calibration fixed the problem. Ive heard of battery calibration with a few smart phones, but I didnt think netbooks or laptops had something like that
Yeah, seems to be (from what I've read) that if you charge repeatedly without letting to discharge completely, you will need to calibrate it eventually.

Also I've read that you must calibrate a battery once a month :)
 

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#17
No idea - I just put it in and it works. thats all i do :roll:
 
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#18
Fully draining is GOOD for the battery, it makes the cells last longer. charging constantly when the battery is full or near full just wears the battery out quicker. as it f**ks up the cells.

if the battery has been working fine until now. Id just put it down to the battery being bad and RMA'ing it.

its not a case of how long the battery lasts but what the battery is reporting when its plugged in.

Unless youve really abused that battery

I used to think this, but what you said is only true with older batteries.

Fully draining a battery is bad and short charges are best for you battery. When you run a laptop on less than 20% battery it adds a lot of extra wear. Also keeping the laptop plugged in to the mains when the battery is at 100% is not bad for your laptop unless your laptop gets overly hot.

Edit with a souirce - the first google hit for laptop battery care
 
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#19
No idea - I just put it in and it works. thats all i do :roll:
Yeah I also do that, but when I think, the self life is very reduced , makes me mad :( fortunately this isn't the issue anymore after calibration :)