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A notebook battery guide - Page 4

post #61 of 117
6/7/06 at 1:05pm
Quote:
Originally Posted by Asoulintime1982
I never heard of this either can you post pics of the Tabs and power managment screens you are talking about?
Already did! See Page 2 of this thread.
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post #62 of 117
6/7/06 at 1:12pm

for Sirius

Sirius,

[nevermind previous link]

On my friend's HP zv6000 series notebook, installing the latest AMD processor driver (ver 1.3.1) fixed the processor throttling issue. It will now run at constantly at full speed when the Always On setting is used in XP's Power Options. It will throttle up and down on demand when the Portable/Laptop setting is used in Power Options.

Note that XP never quite accurately reports the processor speed, but it does throttle up & down. AMDClock (from AMD's website) seems a bit more accurate. Not that it matters.

However, I cannot get the Power Management tabs to appear in the Device Manager with the latest processor driver. I have updated my first post. So far, I can only get the Power Management tabs when using processor driver version 1.2.2.1.

EDIT: yeah, I can say for sure that the 1.3.1 driver does not provide the Power Management tabs in the Dev Mgr. I've tried it on two different notebooks with the same result. Anyone have a link to the old 1.2.2.1 driver?
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post #63 of 117
6/8/06 at 10:49am
when not using a battery for either a short period of time like over night or a long period of time, is it better to store the battery in the refrigerator?
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post #64 of 117
6/8/06 at 11:46am
http://www.batteryuniversity.com/partone-19.htm

15° C (59 F) ?
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post #65 of 117
6/29/06 at 11:54am
Thanks for this great tutorial. I kinda add some stuff to my knowledge!
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post #66 of 117
7/16/06 at 2:35am
Nice howto...That pic of the innerds was awesome...also never thought about disabeling unused devices...gonna use those tips next time I find myself in rush hour traffic.
Nice Guide!
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post #67 of 117
7/24/06 at 3:48pm
Quote:
Originally Posted by aussie
As recommended you should "condition" new Li-ion batteries by running at least 3-5 full charge/discharge cycles. This gives the battery chemistry a chance to permeate all the twisty little passages .
Whatever you do, DON'T do this. Full charge discharge cycles can actually damage the battery. The number of cycles you get from a lithium battery increases greatly if you only cycle it shallowly.

Quote:
Originally Posted by BatteryUniversity.com
Unlike nickel and lead-based batteries, a new lithium-ion pack does not need cycling through charging and discharging. Priming will make little difference because the maximum capacity of lithium-ion is available right from the beginning. Neither does a full discharge improve the capacity of a faded pack. However, a full discharge/charge will reset the digital circuit of a 'smart' battery to improve the state-of-charge estimation
There are other ways to reset the smart circut. You can typically get to it through the boot-up command line (at least on sager/clevo notebooks). I think there was a funny key combinatation that you hold (note: not DOS command prompt, I think it's a BIOS function).


Another bit of informations about lithium batteries that few people know is that lithium batteries have a 3-5 year shelf life, independant of use. So if you don't use the battery it will eventually degrade anyways. Heat greatly accelerates the process.



Lithium batteries are often rated by the numbers of charge discharge cycles they can handle, Generally 100% - 10% charge gives you 500 cycles to 50% capacity. However, only discharging the battery to 60-40% charge extends the cycle life towards 1000 cycles.

This is all just off the top of my head.


Oh, by the way, the Nickel-Cadmium "Memory Effect" is a complete fallacy.
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post #68 of 117
7/25/06 at 9:00pm
Very useful post. Thank you.
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post #69 of 117
8/22/06 at 3:10am

Vaio won't charge battery

I have a Sony Vaio R505, I guess it's about 4 or 5 years old by now. Recently the battery I had started intermittently refusing to take a charge. I could leave the laptop plugged in all day and Windows would report it as "charging" but at the end of the day the charge would be the same. I figured the battery was old so I'd get a new one. Well, I got a new one and it worked fine for about a month. Now the problem is back.

The simple problem is that the laptop will not send a charge into the battery anymore. I have tried cycling the batteries, unplugging them, charging while the laptop is off, etc. It seems pretty obvious it's a problem with the laptop itself. My question is: what part of the laptop would it be? Is this something that probably means I need to replace the laptop? I have that sinking feeling...

Great guide, I was surprised (and glad) to know that cycling doesn't really do anything.
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post #70 of 117
8/28/06 at 6:37pm
New to notebooks here and battery care to me is the most important thing I should learn.

When the battery is charged to 100% when the notebook is plugged in, can I just take out the battery or do I have shutdown first?

Would it hurt the battery's long-term performance if I always leave it to low battery levels to recharge?

BTW, I am on a Li-Ion battery. Thanks!
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post #71 of 117
8/31/06 at 5:25am
Big dillema.... I want to ask you, and if possible give me a link to read, if when i bought a notebook, which has a li-ion battery,on the first use of the battery, I wonder if I have to format it ( a full charge 5-8 hours, then let it discharge till 0%)? Is this thing necesarly? Can it cause problems to the battery if I do this, or it will help it?
TX for the answers!
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post #72 of 117
9/9/06 at 4:59pm
Have a nice read.

http://en.wikipedia.org/wiki/Lithium_ion_battery

Quote:
Permanent Capacity Loss versus Storage Conditions

Storage Temperature ------- 40% Charge ---------------- 100% Charge

0 °C (32 °F) ----------------- 2% loss after 1 year ------- 6% loss after 1 year
25 °C (77 °F) --------------- 4% loss after 1 year -------- 20% loss after 1 year
40 °C (104 °F) -------------- 15% loss after 1 year ------ 35% loss after 1 year
60 °C (140 °F) -------------- 25% loss after 1 year ------ 40% loss after 3 months

Source: BatteryUniversity.com
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post #73 of 117
9/10/06 at 12:41am
Quote:
Originally Posted by ez2remember

So that means it's better to store the battery at 40% charge rather than 100%? It looks like a huge difference!
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post #74 of 117
9/10/06 at 5:34pm
Yes it means exactly that... Its best to store batteries at 40%.

Also its best to keep the battery cool as possible during use/storage.
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post #75 of 117
9/11/06 at 8:28pm
Cool, thanks. I'll try to store it at 40% when I can.

So say if I have battery charging on AC power. Then I put on hibernate which basically completely shuts it down. I want to take out my battery since it is at the level I want it to be at. Does it damage the battery in any way if I do this?

How about the reverse, with me being on AC without battery and I want to be unplugged so I hibernate then put in the battery? Or just hibernate and move elsewhere to plug?
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post #76 of 117
9/13/06 at 10:30am
Why do you need to hibernate? Why can't you just start shutting down at 41/40%?

I do not advise you to have AC plugged in, then inserting the battery. This can damage your battery... Its like pulling out the battery while its plugged in too.

Best is just to shutdown the computer completely at 41/40%, remove ac, then remove battery.
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post #77 of 117
9/13/06 at 11:17am
Keep in mind that 40% is a good charge to store your battery at. If you're using it somewhat regularly, only charging your battery halfway is rather counter-productive.
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post #78 of 117
9/13/06 at 8:12pm
Alright, makes enough sense. Thanks!
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post #79 of 117
9/16/06 at 3:03am
How do I know how many cells inside each battery when look at the cover?
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post #80 of 117
9/19/06 at 1:06am
Quote:
Originally Posted by Notebookforums-Adam
A Li-ion battery discharge rate is around 2-3% of capacity per month if it's just sitting from what I've read. So if stored @ full charge, it will probably hold a charge for the lifetime of the battery pack.

It will likely have a longer life if stored outside of the notebook, but it's never suggested to do because most notebooks left exposed can be damaged.
Hi! Excellent info!!

I just have a question on what you said up there.

You said it's never suggested to do so becuase most notebooks left exposed can be damaged. But what can damage where and how?

Thanks!!
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