When plugged in, remove battery ?

I've read a lot about Li-Ion batteries... in a nutshell:

- If you have to remove your battery, drain it down to 40% first
- The colder temperature your battery is stored at 40%, the less capacity it will lose over time
- Buy new batteries only when you need them... as soon as a Li-Ion battery is made, it starts losing capacity
- Li-Ion batteries lose capacity after full cycles... draining the battery is 1 cycle... draining to 50%, charging back up, then draining back to 50% again is one cycle, not 2.

I've taken to removing my battery at 40% when I'm going to be plugged in for a while...

I'm wondering what everyone else thinks ! What do you do ? Do you just throw caution to the wind and leave the battery in ?

 

I would only do it if you are going to be unplugged for an extended period of time. The battery stops charging once it hit 100%.

 

I agree, but that's the whole thing... it loses LESS capacity when it's stored at 40%... and when it's cold.

When it's inside the laptop, it's at 100% and it's hot. That leads to more capacity loss.

That's why I brought this up...

 

Ive read a few articles on this iKaris and after having this notebook for just 1 and a half months ive noticed my battery life has decreased slightly, As I test I charge my battery to 80% rather than 100, While 40% is the optimum amount overnight 80% is still alot better than 100% and your right heat does effect the amount of oxidization inside the battery so I tend to take my battery out when it hits 80%, Ive been doing this for 2 weeks now and according to NHC my battery stores exactly the same number of mah it did 2 weeks ago whereas i lost about 300mah in the first month leaving it in permanently.

 

Thanks for the info, matt...

so complicated, now I have to remember to remove my battery !

It's one of those things where you have to decide what your time is worth...

Is it worth your time remembering to remove your battery and possibly exposing it to damage, compared to buying a new battery earlier ?

In any case, if anyone buys a replacement battery, remember to store the second one in the freezer (as long as it's above -20 degrees celcius) at 40%... it will lose less capacity that way.

 

I look at this way. I buy a new battery on average every year and half. Is it worth $100 to not to have to remember to remove every day and stick it in the fridge, yup.

 

hehe well maybe I wouldn't go as far as popping it in the fridge every day... but at least taking it out is not that bad...

It would be nice if you could choose to have it stopped charging at 40% instead of 100%

 

I agree that it probably doesn't make enough of a difference for it to be worth worrying about it. Now, if taking the extra precautions made it so you never lost any capacity, then I might consider it...

 

I dont know but I would never do the above and definitely not put in the freezer for that matter.

I would remove it because say "for some reason" the AC adapter or the wire disconnects...you are pretty much doomed.

 

this battery saving thing is useless. Your laptop will probably die faster then the battery itself. I have Fujitsu with original battery I was getting 4:15 on it when I first got it and after using it extensively for over 1.5 years, I still get slightly over 4 hours. Besides, if you are like me who replaces his notebooks every 6-12 month, why bother?

 

Which sofware do you use to monitor the battery mAh capacity ?

 

notebookhardwarecontrol

 

Thanks matt

Is it this one tough ?
http://www.pbus-167.com/chc.htm

 

thanks for the info~

learnt something new ^-^

*uses battery until 40%*

 

So, here's how I work:

I kept the pink piece of anti-static paper that covers the keyboard when you first open the SZ.

I lay that on the keyboard when I'm transporting it to protect the screen.

When I take it out to use for extended periods, I take out the battery and wrap it in the anti-static paper, and place it in my bag.

Then I plug in and boot up.

I check my battery every few days to ensure that it's at 40%

It's really not that big a deal. I hardly use it on battery unless I'm travelling.

Now, when I go on business trips, my battery will not be tired and will last longer than if I was always keeping it plugged in while I'm sitting at my desk or at home, when I don't need to have it in the machine... where it will be HOT and charged to 100%, which will hurt the battery life.

Sure, maybe it won't make a big difference... but I flattened the battery on my last laptop, and I don't want to do the same this time.

I TRIED to find a software that will stop charging your battery at 40%, but I don't think it exists... anyone know ?

 

Hi,

I have a question: why after battery is charged up to 100% the standard windows icon keeps showing that the battery is charging. It never goes to On AC Power, which has a different icon.
I have Vaion SZ1XP.