battery leave

i want to remove my battery from laptop and i want to plug it to socket - i am not moving anywhere soon and i dont want to overuse battery. is it better to charge to it to 100% and leave it or some other amount?

 

Yeah, but even then you can't compare the price of adaptor to the price of battery.

 

yep 40-60% charge, take out the battery, leave it plugged into AC (the adaptor should be fine, as long as it is the one that came with the notebook)

 

Leaving the laptop plugged in won't overuse the battery. In fact, it won't use the battery at all. In all likelihood, there probably won't be a whole lot of difference between leaving the battery in and charging it to 40% and keeping it in the freezer.

 

Ive always wondered about that,now i know...................

 

[Rant mode on] I do not understand why so my people worry so much about protecting the battery and saving them from use? These are meant to be used, that is their purpose, they were no meant to be put in a freezer to sit and do nothing. [Rant mode off]

I have had my battery in the G1 in my sig for almost four years, it still runs on the original battery. It spends most of the time plugged into the AC adapter. It gets the occasional run on the battery, and still gets close to two hours of run time. Leave your battery in the laptop, use it as a UPS, once in a while run the laptop with it. Your battery will be fine.

 

Good to have a second opinion....................

 

If your notebook runs hot it will degrade the battery over time. Heat and batteries don't mix

 

My G1 runs very warm, I have to run it on a notebook cooler, as the hard drive will overheat. So I know the battery is exposed to a good deal of heat. Yes heat does not help the battery. Heat will increase the self discharge rates by quite a bit. and long term it will reduce the number of charge cycles. But the nature of laptop Li-ion battery chemistry is such that they start to degrade the second they are finished being made, whether they are being used of not at some low level they are degrading. That's why I say just use the battery.

 

I also say leave it in. Do you honestly believe you'll still be using the laptop at the point when the battery becomes useless? Are you saving it for resale or something? The bulk of batteries are at 50% or so in 3-4 years, but laptops are often tossed in the 2-3 year period.

 

I say it depends. If you're not going anywhere soon, where soon means 2 years, by all means remove the batteries and store them. Even if the laptop fails you can salvage the individual cells.

If you're not going anywhere soon, where soon means by the end of typing your post, then I have to stab you.

Here, let me refer you to Battery Degradation and Storage

2% capacity loss is much preferred over 35%, no?

 

Let’s try and approach this another way.

It’s Sunday night, you have been spending the past two hours on a paper that is due tomorrow, (for work or school, but it has to be turned in) it is getting late and you’re almost done. The power goes out, and you lost all your work. You go and get your battery that has been in the freezer for nine months. The first thing you have to do is let it sit till it warms up. (You absolutely do NOT want to put a frozen battery in your laptop and use it) Another two hours and you decide to turn on the laptop. It comes to life but only has 20% battery capacity. You spend that time trying to recover your file but have no luck. Now you can’t even retype the paper, the power is still out and you have a dead battery. About that time your thinking if it had been kept the battery in the laptop it would have a full charge, and I would not have lost my paper.

Now all you naysayers about the above scenario, please I don’t want to hear it you are missing the point.

 

Let's try and approach this in a way that proves my point and doesn't make me look like an idiot:

You've been working on your research paper due in tomorrow with a old, 3rd hand battery in your laptop (and your new one in the freezer, you've so wisely stored). The power goes out. Coincidentally, you need to give a presentation on your research in a place that has no power points. No can do for your current battery to accomplish both.

If your battery was in the freezer and started at 60% charge for 9 months, it would remain at around 59% charge when you take it out. ( link)

@ 5.8AH that could well mean 4 hours on word, but definately enough for a 45 minute presentation.

You finish up your work, replace your batteries with the new one and head to the lecture theater. On the way, you're attacked by a madman. You fend him off with your empty battery, that is broken in the process, while you jury rig a impromptu taser with your new battery. (Had you used the battery for 9 months, the battery might not have enough capacity to save your life).

That drained half your current capacity, but you can still pull out enough battery for your 45 minute presentation.

You flawlessly present your findings, and get the girl of your dreams.

 

Fishstick,

You are misreading what they are saying in that article, they are talking about recoverable capacity NOT capacity after storage. That is two different things. It's pretty hard to find a spec on self discharge rate, but typically on a LI-ion is about 5% per month.

And yes you missed my point

 

Fishsticks,

Sorry, but you didn't accomplish your first sentence goal.

 

tilleroftheearth,
hahaha
I tell you what. I'll write up plans for that 12 USB port DC/AC/DC converter ( link here), and you teach othonda the meaning of "humour".

Just as a proof of concept, I'll use mosfet-induced waveforms to power a six wave cyclofrequency converter than powers a LLC halfbridge for efficiency (or lack there of). This should work much better than the hand-cranked mobile phone charger I made (it drained batteries).

 

Fish,

I have a sense of humor, or is it humour, oh wait its humor, no humour, dange it I am all flustered now. :laugh:

 

Fishsticks,

but that is not fair! The platforms already support all those USB ports.

What you're asking me to accomplish is - the impossible!

othonda, glad we're all on the same page.


This also made me lol...

See:
http://www.tomshardware.com/news/Hackers-Cybercriminal-Cyber-crime-Virus-Malware,11185.html

 

Aside from exploding the battery, how could it get much worse?

 

Sigh..
How to prolong lithium-based batteries

The article tells us what we've known (so nicely summarized for us idiots at the bottom of the page):
1. Do not let the laptop drain completely. This is horrendous for battery longevity.
2. Batteries with fuel gauges, or battery charge meters should be discharged every 30 full charges. This is because the meter carries memory inside, which if never discharged will become inaccurate/eventually lead the laptop's battery to not function properly.
3. Keep the batteries in a cool environment. (Like most electronics) Refrigerator is a great place, do NOT freeze it. Your just asking for condensation madness by freezing it..
4. Consider removing the battery from a laptop when running on fixed power. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery casing.)
^ ^ ^ ^ ^ Notice how they mention NOTHING about the battery loosing longevity from being plugged in.
5. Avoid purchasing old batteries. Make sure they're fresh off the Chinese factory!
6. KEEP THE BATTERY AT 40% charge FOR STORAGE PURPOSES.

@Fishsticks
Why in the hell are you going from DC to AC to DC? You do know we have step ups/step-downs to go from DC TO DC using SMPS SINCE THE 1950's!?!
One: Step ups/down steps are efficient, much more so then DC to AC then DC, with an astounding 78%-98% using a SMPS.

@ Fishsticks
With that type of efficiency your boasting (DC to AC to DC using USB power) we'd be better off building a tesla coil/powering the battery that way...