Linked by Thom Holwerda on Mon 8th Feb 2010 23:55 UTC
Windows The past few weeks or so, there's been a lot of interest in a supposed battery status report bug in Windows 7. After installing Windows 7, some users reported seeing "consider replacing your battery"-warnings in systems that appeared to be operating just fine on Windows XP or Vista. After extensive research, Steven Sinofsky has now explained on the Engineering 7 blog that the fault is not with Windows 7 - it really, really is your battery.
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Battery Topic
by OSGuy on Tue 9th Feb 2010 08:50 UTC
OSGuy
Member since:
2006-01-01

Since we are on the battery topic, I am kind of confused about something.

Is it OK to have your laptop while the battery is inside permanently plugged in to the power? I mean at work, we have the laptops permanently plugged in while the battery is in the laptop. Don't we over charge and destroy the cells? Someone told me it's worse to have it charged every two hours than having it plugged in permanently. Is this true? I think once it reaches 100% it no longer charges but I am not sure.

Edited 2010-02-09 08:51 UTC

Reply Score: 2

RE: Battery Topic
by WereCatf on Tue 9th Feb 2010 09:22 in reply to "Battery Topic"
WereCatf Member since:
2006-02-15

That's one thing I too have been wondering about. Logic says that the laptop would be smart enough to just stop charging once the batteries are at 100% and would let them sit idle until the laptop is unplugged...but then again, many vendors are known to just go the easiest route whenever possible and I've actually had a laptop which would start charging the batteries every 2 minutes when they dropped to 99%.

Reply Parent Score: 2

RE: Battery Topic
by kaiwai on Tue 9th Feb 2010 09:53 in reply to "Battery Topic"
kaiwai Member since:
2005-07-06

Since we are on the battery topic, I am kind of confused about something.

Is it OK to have your laptop while the battery is inside permanently plugged in to the power? I mean at work, we have the laptops permanently plugged in while the battery is in the laptop. Don't we over charge and destroy the cells? Someone told me it's worse to have it charged every two hours than having it plugged in permanently. Is this true? I think once it reaches 100% it no longer charges but I am not sure.


I've heard mixed messages regarding that; I was worried because I do the same with my laptop - I tend to have it plugged in for long periods of time. On one forum I was told that it is good to use the battery as much as you can to 'exercise' the battery. Another forum said that it doesn't matter, its all voodoo to claim it needs to be exercised. For me I am conscious about looking after my hardware so even as someone who is pretty knowledgeable about computers - I am confused as to what I am supposed to do.

Reply Parent Score: 2

RE[2]: Battery Topic
by OSGuy on Tue 9th Feb 2010 10:06 in reply to "RE: Battery Topic"
OSGuy Member since:
2006-01-01

Hmm I only just started leaving my personal laptop permanently plugged about a 3/4 days ago. Perhaps there is an expert here on OSNews that knows the answer to this question?

Update: There are mixed responses everywhere. since there are so many, I picked the one I like ;) http://tech.yahoo.com/blog/null/67132

Edited 2010-02-09 10:13 UTC

Reply Parent Score: 3

RE[2]: Battery Topic
by Carewolf on Tue 9th Feb 2010 11:27 in reply to "RE: Battery Topic"
Carewolf Member since:
2005-09-08

Batteries are designed for being in computers on AC. So they are okay.

They do however lose capacity by being a full charge and by being hot (laptops on AC gets hotter than when on battery).

So if possibly you might be able to extend their lifetime by discharging them partially and removing them and storing them somewhere cold and dark. On the other hand, then they are not readily available when you do need battery in your laptop. Better just by a new battery every two years.

Reply Parent Score: 1

RE[2]: Battery Topic
by StephenBeDoper on Tue 9th Feb 2010 19:17 in reply to "RE: Battery Topic"
StephenBeDoper Member since:
2005-07-06

I've heard mixed messages regarding that; I was worried because I do the same with my laptop - I tend to have it plugged in for long periods of time. On one forum I was told that it is good to use the battery as much as you can to 'exercise' the battery. Another forum said that it doesn't matter, its all voodoo to claim it needs to be exercised. For me I am conscious about looking after my hardware so even as someone who is pretty knowledgeable about computers - I am confused as to what I am supposed to do.


That seems to be the case with battery tech in general. E.g. people have told me that you should ALWAYS fully-discharge your laptop battery before recharging - and others have told me the exact opposite (that you should NEVER fully-discharge a laptop battery).

The best (or most plausible-sounding) explanation I've heard is from a friend who studied electrical engineering: fully-discharging means the battery will hold a charge longer, at the expense of the overall lifespan of the battery. While *never* fully-discharging means the battery will have a longer lifespan, at the expense of how long it will hold a charge.

Reply Parent Score: 2