Should I completely discharge my laptop battery?

I have a Satellite A660 laptop. I've read that you should completely discharge batteries every month so that the charger can recalibrate on what is 0% versus 100%. Does this apply to this laptop? This also means I turn off the safety feature of hibernating when the charge dwindles to 8%. Doesn't it mean that the disk heads crash once the charge dies?

Hi, Timox,
Yes, I found much online when I surfed. There isn't necessarily complete consensus on everything. For example, some people (including the link you provided) suggested discontinuing the charging process once 100% is reached, but others say that the discontiuation is automated. Still others claim that you should remove the battery, or (in your link) disconnect the AC supply. There was no explanation for disconnecting the AC supply, but the explanation for removing the battery was so that it would not be exposed to heat. Apparently, this is only a concern when the laptop is in high performance, so it isn't black and white. It also depends on the laptop design, i.e., whether the battery is close to heat sources. In my case, I use the battery as a UPS, so it doesn't make sense for me to remove it from the laptop.
From what I've gathered, you should fully discharge the battery to 5% once a month. Under the Balanced power profile, the default action for the Critical battery level seems to be properly set for this.

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Should I always plug my laptop to the charger or should I let the battery die before recharging my laptop

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What is the best charge/discharge regime for the laptop battery?

I have a HP G71 340US laptop with 12 cell battery of 8800 mAh design capacity.
It is clear, that keeping the laptop plugged, and always having 100% charged battery is not the most healthy regime for the battery.
I have found from the web that permanently charging and discharging the battery (like charging form 9% to 100% then back to 9% and so on) is also far not the most healthy regime for the battery.
So my question is: what is the most healthy regime for battery charging/discharging, assuming that the AC power source is always available?
It seems there in so software which can support such regime automatically, as charging cannot be stopped programmable, but maybe there is a software which can report corresponding alerts, informing that it is time to start charging or to start discharging?
This question was solved.
View Solution.

vahagn21 wrote:
Yes, we can, but looking to the battery icon next to the clock every five or ten minutes is not the best solution, right?
Hi,
Probably you've got more times than me, I only look at it once in its life time. Please try this if you wish
http://download.cnet.com/Laptop-Battery-Monitor/3000-2094_4-10442542.html
Regards,
ps. I have to go to work now. 6:40AM already
BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

If I tend to plugg in my iPod Touch before it gets completely discharged,that will reduce battery life more quickly?

I read that it's recommended to fully discharge the battery once in a month. So now I don't completely discharge de battery before plugging it in.

Which is fine. Charge it when you need to charge it. It's not good for the battery to always drain it, so I use the rule of thumb 'charge it when I don't have enough to get through the next day'

Laptop battery odd behavior

I recently purchased the HP PROBOOK 430 G1 13.3 128GB i3-4010u. I'm using it primarily for college for light workloads since I have a custom built PC I used for extensive tasks. However, even with the light workloads, I'm experiencing this odd behavior from my laptops battery. The laptop battery meter goes to 8 percent randomly. I have to put my laptop to sleep then wake it up or reset it then it returns to the normal battery levels. Again there's no pattern to it, it's completely random. I have obversed it since July 22nd when I first got it and got nothing. It probably happened 10-15 times. I don't want to send it in yet for a repair since I can't replicate the problem.
I'm using HPFanControl by troubadix at constant medium fan level so I know it's not heating issues. I also never go above 50c
I also ran the battery diagnostic in BIOS and it gave me no errors.
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Help?

Hi @jlakersman,
Your HP ProBook 430 G1 is a commercial product and to get your issue more exposure I would suggest posting in the commercial forums. Here is a link to the Commercial Notebook forum.
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Thank you,
BHK6
I work on behalf of HP

[SOLVED] Brand new laptop, battery charges to 95% max (?)

I've seen this widely on a simple google search for "last full capacity",
the laptop has been used for just two days, but acpi reports:
koko@TravelMate ~ $ acpi -biatc
Battery 0: Charging, 100%, until charged
Battery 0: design capacity 4400 mAh, last full capacity 4182 mAh = 95%
Adapter 0: on-line
Cooling 0: x86_pkg_temp no state information available
Cooling 1: intel_powerclamp no state information available
Cooling 2: Processor 0 of 10
Cooling 3: Processor 0 of 10
Cooling 4: Processor 0 of 10
Cooling 5: Processor 0 of 10
it won't go higher than that.
Is that normal? maybe some sort of overcharge protection?
my previous netbook always charged to 100% or even a bit more than the design capacity...
Last edited by kokoko3k (2014-05-10 13:31:54)

emeres wrote:Depending on the technology used, one (or several) of the cells might be shorted or almost shorted. Another reason might be wrong measurement [circuit] from either battery or laptop side. And the simplest reason would be that the laptop/battery was produced some time ago, depending on type of technology used, certain batteries lose significant amount of capacity over time (even if unused). Since it is brand new, get in touch with your supplier and get at least the battery exchanged.
If you try to discharge it first, do fully discharge it using LEDs or some other low current load until voltage drops to approximately 10% of nominal voltage, and then recharge it not extending 110% of time it needed to be fully charged Repeating this cycle might and does help with certain types of batteries. If I were you, I would not bother however and go get a replacement from the shop, unless it is really troublesome.
As for overcharge protection, there are usually thermal (usually the most important one), shortcircuit and overcharge (meaning overvoltage protection) protections built into the battery (usually one ic) and/or laptop.
None of that is applicable for Lithium Polymer or Lithium Ion batteries. They should never drop below 3 volts. Discharging them below that point will destroy them and risk a fire. Charging Lithium based batteries is also non trivial and requires tight monitoring of voltage and controls on current and time. Do not mess with LiPoly or LiIon, they truly represent a serious safety hazard if they are mistreated. I note that your suggestions and descriptions of shorted cells are applicable to some non Li technologies; notably Nickle based batteries (Nickle Cadmium, Nickle Metal Hydride, etc...) In general, those are not found in modern laptops because of their toxicity and relatively low energy density as compared to LiPoly.
http://www.empirerc.com/liposafety.htm
http://www.rcpro.org/net/ThreadView.aspx?threadid=260
http://magazine.sfpe.org/content/lithiu … ry-hazards
http://www.datasheetdir.com/BQ29400+download
http://batteryuniversity.com/learn/arti … _batteries
http://www.batteryuniversity.com/learn/ … ith_li_ion
Last edited by ewaller (2014-05-09 03:00:19)

SCCM Report for Laptop Battery Condition

Good morning,
We are in a situation where we're needing to monitor conditions of laptop batteries in the school district I manage. I have added the laptop batteries class(Win32_Battery) and have all required/requested information checked under this class. This
has been set for a week, so all devices should be inventoried by now.
How do you recommend my getting a report together that shows battery condition/etc? The fields I would like to see are ones such as:
Win32_Battery
battery status
design capacity
design voltage
Expected Life
Error Description
Full Charge Capacity
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I am not that knowledgeable about SQL reporting/SCCM reporting, so any help in getting this is greatly appreciated. Any resources that you can point me in for getting more familiar with creating my own reports would be greatly appreciated. I
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Thank you!

Good you have added the class. Please use the following link for the detailed information about Win32_Battery:
https://msdn.microsoft.com/en-us/library/aa394074(v=vs.85).aspx
Last Full Charge should guide your decision on replacement.
Following link will help you as well:
http://www.helpwithwindows.com/Windows7/Check-your-laptop-battery-health-in-Windows-7.html
-RG

HT201407 When I did the latest update, my phone was wiped out completely. My laptop that I had everything on, crashed. I have a new laptop, tried to update on it and of course i couldn't without deauthorizing my account then reauthorizing. I need help!

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cathorio wrote:
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Hi:
Below is the link to the service manual for your notebook.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01740724/c01740724.pdf
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Sound ID 510 or the EarPrint App. rapidly discharges my iPhone battery???

It is hard to pinpoint the cause for certain (if there are any tools/apps that would help I'd love to hear about them???) but it seems like my new Sound ID 510 bluetooth headset and/or the EarPrint app. that goes with it are responsible for an occasional speedy discharge of my iPhone battery.
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I am still running iOS 3.1.3 as I have read of various sync. issues with iOS 4.x
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Any comments appreciated.

Any comments appreciated.
No problem with battery use at all running iOS 4.x on an iP4.
I am still running iOS 3.1.3 as I have read of various sync. issues with iOS 4.x
There are no "sync issues" with 4.x. Don't take as gospel what you read here. There are always problems reported here after upgrades, almost all due to problems with the specific phone, system or user error, invariably assumed by the poster to be a "bug".

Is it harmful for the laptop battery to turn it ON on the AC power for long time?

Hi
Thank you for reading my post.
Is it harmful for the laptop battery if I put laptop on for a long time on AC power?
Thanks
Solved!
Go to Solution.

Hello,
the simple answer is no.
The Lenovo powermanager should do the work for you.
May be you are able to switch charging to automatic charging in powermanager settings.
I don´t know if the option, in the newest versions of powermanager, is choosen as standard.
May be there isn´t a switch or checkbox, cause the manager is doing it already.
But it won´t harm your battery, when you let it plugged in AC.
Follow @LenovoForums on Twitter! Try the forum search, before first posting: Forum Search Option
Please insert your type, model (not S/N) number and used OS in your posts.
I´m a volunteer here using New X1 Carbon, ThinkPad Yoga, Yoga 11s, Yoga 13, T430s,T510, X220t, IdeaCentre B540.
TIP: If your computer runs satisfactorily now, it may not be necessary to update the system.
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Iphone 5 quick discharge of the battery

Iphone 5 quick discharge of the battery for 4 hours grade of 100%, That tell me?I'm Sorry for errors, write from Russia.

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
I suggest that you try to repair the phone software using PC Companion..
Before repairing your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?
If the issue should still remain I think that this needs to be examined and fixed at a repair center. For more information about how to submit your phone for repair and where, contact your local support team.
- Official Sony Xperia Support Staff
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How long should I charge the New iPad battery ??

Hi,
Can someone tell me :
How long should I charge the New iPad battery ??
i dont know, and i cant find this on the apple page.
i know that with the iPod Touch Five and Four Generation, the charge its only 2-4 hours but on the iPad how long is the charge?
im really miss it!
Can someone help me ?
Thanks!!

The quickest way (and really the only way) to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.
How to Calibrate Your Mac, iPhone, or iPad Battery
http://www.macblend.com/how-to-calibrate-your-mac-iphone-or-ipad-battery/
At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html
Also, if you have a 3rd generation iPad, look at
Apple: iPad Battery Nothing to Get Charged Up About
http://allthingsd.com/20120327/apple-ipad-battery-nothing-to-get-charged-up-abou t/
Apple Explains New iPad's Continued Charging Beyond 100% Battery Level
http://www.macrumors.com/2012/03/27/apple-explains-new-ipads-continued-charging- beyond-100-battery-level/
New iPad Takes Much Longer to Charge Than iPad 2
http://www.iphonehacks.com/2012/03/new-ipad-takes-much-longer-to-charge-than-ipa d-2.html
Apple Batteries - iPad http://www.apple.com/batteries/ipad.html
Extend iPad Battery Life (Look at pjl123 comment)
https://discussions.apple.com/thread/3921324?tstart=30
New iPad Slow to Recharge, Barely Charges During Use
http://www.pcworld.com/article/252326/new_ipad_slow_to_recharge_barely_charges_d uring_use.html
Tips About Charging for New iPad 3
http://goodscool-electronics.blogspot.com/2012/04/tips-about-charging-for-new-ip ad-3.html
Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
http://thehowto.wikidot.com/prolong-battery-lifespan-for-ipad
iPhone, iPod, Using the iPad Charger
http://support.apple.com/kb/HT4327
Install and use Battery Doctor HD
http://itunes.apple.com/tw/app/battery-doctor-hd/id459702901?mt=8
In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.
 Cheers, Tom

My laptop battery blown (presario v6608au)

dear sir,
my laptop battery has blown today.
i switched it on and it intially caught fire. and blew up.
my laptop is in tarnation ..
what should I do.
i bought it on 1/11/07 and its not under warranty,
but is there any way that i will be helped by compaq.
I feel very cheated and shocked.
I live in Indore.
please help.
your's,
abinav
Indore

How old is the battery? Have you considered just replacing it?

Should I completely discharge my laptop battery?

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