Not sure about batterie

hey guys I have a 6400 and was just wondering if plugging the laptop always in the ac adaptor into powuer source ruins the batterie life?

another thing is at what percentage of batterie life should it be until i should recharge the batterie. Thx for any help

 

Running the computer on AC power will not ruin your battery life.

With Lithium-Ion batteries (the 6400 uses these) you do not have to worry about a memory effect so recharge whenever you want to. The battery has a set number of charge/discharge cycles. People will probably post and say that if you aren't using the battery you should take it out of the computer, store it at 40% and put it in the fridge; but I think that is overkill, you bought a laptop for mobility, why make things complicated--leave the battery in.

It's up to you what you want to do but likely it won't make a big difference either way.

I leave my battery in all the time and charge it after use.
I have a 6400/e1505.

 

I've read that the worst thing for Li-Ion batteries is to be fully charged or fully discharged, in a warm environment. Sounds to me like running the laptop all the time from AC power would provide exactly those conditions. I'm not sure what you can do about it, though...will it even run without a battery in it?

 

I just keep it plugged in always at home, and when im in class let it go off the battery, Personally, if I can get 2-3 years out of hte battery before it starts to loose its charge to the point its useless, im happy. How much is a replacement 6-cell e1505 battery from dell anyway? couldnt be more than about a hundred dollars?

 

Lion charge is strictly controlled. There is peak charge circutry in the laptop and a protection circuit in the Battery itself to prevent overcharge. it can't be overcharged only topped up. if it was overcharged your battery would puff up start on fire or blowup or all of the above. There is no discharge protection circutry on a Lion Battery and Eric DB had it right a total discharge of your Lion will ruin it. However you will note that Software on your laptop will shut it down to prevent going below a threshold. This capability is generally no in the battery but the software or laptop power supply hardware.

Anyhow Batteries are ment to be used and should be However While Li-on has no issues with memory.....they do have finite charge cycle capacity as stated by a previous poster. While running the laptop plugged in, if there is any draw on the battery it will initiate a charge....it will then charge, then peak the voltage of the battery then stop charging.....Plugged in it would repeat this cycle alot. Now a constant peaking of charge is not likely happening in your laptop. The question is, does your laptop run off of mains exclusively while plugged in.....or does it draw off the battery and use the charger to keep the battery peaked. If it does then that's why these batteries get hosed over time.

just 2 cents

 

I have a question. If we take out the battery, how do we cover up the empty space? I took the battery out of my sister's Thinkpad, and now there is a big empty space in the bottom of the laptop.

 

more room for your knee caps?

 

lol..... Seriously though, the empty space bothers me because I'm always paranoid about stuff like dust seeping through the space and into the laptop. I actually thought of using clear plastic wrap, but I later decided against it because it would look just too..... awkward.

 

NO your battery would be fine.