Remove Battery or leave in?

I have a new HP dv5222nr laptop. I plan on mostly using my laptop plugged in. Is it best for me to leave the battery disconnected or should i just leave it in for when i might need it? Will have the battery connected but running off AC build up more heat? Or is it not that big of a deal?
Thanks for all the help
Matthew

 

It is not that big of a deal. I have my notebook for almost 2 yrs now, I mostly kept it on AC adapter.

JC

 

Do you leave your battery in?

 

Of course, or else the dust and debree will go in. Besides it doesnt hurt to keep it in there.

JC

 

no don't leave it in

litium ion batteries capacity will shorten as time goes by and the warmer your battery is the faster its life will shorten

best to leave the battery at 40% charge and put it in the fridge (not the freezer)

if you leave it at room temp (25C) at 100% charge, expect the battery life capacity to shorten around 20% a year

EDIT: though its true dust and debris will get in your battery slot, don't be lazy and just clean it, leaving your battery in the fridge can mean extending its life so when you do need it to be on the go, it won't die out on you as fast.

there is one exception, laptop litium batteries are "smart" and they have a circut in them that is always on, thus always draining a little power, so if you plan to leave it the fridge for a really long time, then put it in there at 100% charge

 

I agree with hmmmm! But I don't leave it in a fridge. It is in my backpack all the time.

Leave battery out if you are using it on AC. I can confirm that my Asus 4 years old battery still holds 3,5 hours that way.

Even if it is full it will be charged a bit now an then - that wears battery out.

Cheers,

Ivan

 

If you only use AC adapter, just take it out, and let it die or on a low level before having a fully charging. It will make the life can last a longer.
Cheers

 

Thanks for all the help everyone!
It sounds like it will really help my battery life if i take it out. Now what do you think if you leave it in? Will it make the laptop hotter? I know if you use the battery the battery gets hotter, in turn making the laptop hotter. So if your going to use A/C would it behove you to take the battery out would it make the laptop cooler?

I am thinking about this too much but i am just curious.
Thanks everyone for the help

 

I suggest you have a nice read of this article.

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

Its best to store batteries at 40% capacity (hence removal). Its also best to use/store your batterie(s) as cool as possible.

 

For those of you who have stored your battery in the fridge... Do you do anything to avoid moisture problems? What do you put the battery in?

 

Zip-lock bag?

In a frost-free fridge it's dry inside, but you'd still have condensation taking the cold batt out into a humid room. Whether it'll condense inside, or otherwise do any harm, I don't know.

Haven't put may batts in the fridge (would sooner have it handy), but I have had one (Vaio C1XD, regular size) die completely after maybe two years on mains.

I guess I could replace the cells, but now I mostly use it as a spare terminal-to-home from work.

I have done the hard drive trick: drive dies with some sort of electronics problem and you can't get your data off. The "freezer trick" is to chill it down and whip the data off before it warms up. Sometimes it helps...

We sealed it in a bag with some silica gel, freezer for a couple of hours and then sandwiched between a pair of ice packs while connected to the computer (desktop, sorry). We were lucky, it worked.

ez2remember, thanks for the link + quote.

ps. anyone heard of a "battery fridge"? I'm thinking a big chunk of expanded polystyrene + lid that seals a battery in and has a peltier. Not sure how much power you'd need, but probably not much. Just something neat to sit on the desk...

 

The zip-lock idea seems good.

Anyone have a bad experience with taking out the battery ?

 

40% as in one use of the battery, or 40% as in the entire life of the battery?

 

When I get my laptop, and the new battery, what should I do first? does the battery come fully charged? Do I let the battery charge first?

 

40% as in one use of the battery

 

I dont think the batteries come charged.
Use it normally for a couple of weeks (plugged in AC, then running on battery) just to see if everything works.

 

So run it on AC without the battery inside? Then charge the battery? while the laptop is off or on?

 

My battery (from HP) came at about a 97% charge out of the box.

After reading this thread, I am draining my battery to around 40 percent and taking it out. I'd like to know how well a ziplock back would protect my battery from condensation before I toss it in the fridge, though.

 

I would just like to add if you're using laptop on mains most of the time then its worth discharging/charging your battery to about 40% and storing it away in a cool dry place. However if you require use of you battery on a daily basis then its impractical to do this and the rewards would be small. The best thing to do is use a cooling pad to keep the battery cool during operation. Some battery have temperature sensors inside and using software such as mobilemeter will tell you the temp of the battery.

 

I left my battery in whilst using it on AC 90% of the time after 18 mths DEAD no charge at all, Sure learnt my lesson. I leave it at 40% charge now and then charge/discharge it once a month

 

Alvito: I've never heard any specific advice on treating new Li-ion batteries.

My Dell arrived almost fully charged, which surprised me just because of the issue of posting that much energy in a cardboard box. I gave it a full-ish charge, discharge, charge cycle to see that it worked and because that seemed like a good idea at the time. I figure it's designed to cope with "just use it"... although I've never heard of a battery seller advertising the 40%/cool life extension regime either. Surprise.

Highly inconvenient, yes. I guess another advantage of an oversized battery is being able to get a couple of hours out of it even from 40% full - when you don't have time to charge it before running out the house.

I had a scare with mine deciding the 39% was "full" and switching the charger off: ACPI reported a 1mA charge rate and it stayed like that for a day. It did fill to 100% after a power cycle though, the last few percent went quite slowly.

I don't know what caused it to do this, but the closeness to 40% suggests to me that it's related to being left [dis]charged to 40% recently. I'm running Linux 2.6.17 and some version of acpid, but I don't know whether the battery management system needs any "encouragement" from the OS.

I don't know. My best guess: it's more conservative than putting it in a fridge (especially non-frostfree) unprotected, or taking it out of the fridge into a warm humid room. It's less conservative than bagging it up with freshly dried silica gel (dessicant) each time.

You could check the tech specs on humidity and storage temperatures. I wasn't going to bother for mine, I'm afraid.

 

If for some reason that i need to use the battery what do i need to do? take the battery out and wait for it to cool down (for how long) or put it in the laptop right away? Do i still have 40% to use? Thanks.

 

ikovac and hmmmmm both have good points and lower temperatures will prolong life of the Lithium-ion and other type batteries according to to some manufacturers. Just never never let the battery freeze. http://www.batteryuniversity.com/index.htm Check out part one and two.

 

i got my notebook the 21st and it was 40 percent full so i used it till i had to charge it so now i just use it till it gets down to 40 percent then i charge it.

 

I use my battery until it gets down to 20% or so then recharge it. I haven't noticed any difference as of yet(newer battery)I've heard that the zip baggy in the fridge works.