Battery life refers to the amount of time that a portable computer such as a laptop can function while powered only by its battery.

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Battery: uncharging?

I have a Lenovo Laptop (G470). My OS is Ubuntu. Five minutes ago my computer said that only two minutes were necessary in order to have the battery fully charged. Right now the indicator says that I ...
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1answer
157 views

Laptop screen dimming

On my laptop, when I press the Fn keys that dim the screen - is Windows doing the dimming, or the hardware? Are if it is the hardware, would using software to dim it further improve battery life?
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797 views

It seems Windows 8.1 killed my two T60 laptop batteries

Upgraded Windows 7 to Win8 earlier this year, and last week upgraded to Windows 8.1. (Lenovo T60) Had no problem with battery usage when on Win7 nor Win8. After about a week of Win8.1 on my system, ...
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3answers
4k views

How can I limit battery charging on a Surface Pro (2) or Windows 8(.1)?

Limiting the maximum amount that a battery can be charged extends its life. Historically, utilities for this have been provided by the manufacturer (i.e. on Sony and Lenovo). Does Windows 8 or 8.1 ...
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3answers
207 views

Fixing poor battery life on Windows laptop

I am a college student and I use my laptop in lectures to take notes or (in the event of a boring lecture) work on assignments for other classes. With only vim and a web browser open, I still only get ...
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1answer
73 views

Why was my laptop unable to turn on?

I suspended Ubuntu on my laptop, and then carried it in my backpack to another place. Then I found that the laptop was off instead of being suspended. I couldn't make it power on either, even with ...
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1answer
103 views

Laptops and batteries left plugged in

What kind of batteries can be left plugged in and not suffer any side effects such as less battery life or exploding? I was told some laptops and even some apples can be left plugged in continuous ...
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1answer
110 views

unplug the laptop battery when the laptop is working [duplicate]

I usually plug the charger to my laptop, whiles my battery is plugged in. After a while, when my battery became fully charged I remove it from laptop, while the laptop is still working. Now I want ...
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59 views

Sudden drop in battery life halfway

My thinkpad x61S just got a new battery. But still the battery drops suddenly from about 50% to 0% in 15 minutes. Even with the new one. I'm running windows 7. Any ideas ?
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2answers
35k views

What is a WHr (watthour)?

I was looking for a few computers, and my dad was really picky about the battery life. One of them was "Up to 5 hours", another was "4-cell Lithium Ion (43WHr)", and another was "6-cell Lithium Ion ...
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1answer
605 views

Does windows 8 hybrid-boot consume more battery than the normal boot when my laptop is turned off?

I just bought an Asus Vivobook and I've noticed the battery life is not as long as they say in the specs. I'd like to know if the hybrid-boot is causing this or is something related to my laptop. I'm ...
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2answers
394 views

Do ULV Core i5 CPUs consume same power as i7 CPUs if they use same TDP?

Title says it all really: If you have a Core i5 CPU and its TDP is 17W and there is a Core i7 CPU which also has TDP 17W, will they consume the same battery power even though one runs faster? I am ...
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1answer
35k views

why the first time charge is important

It is always advised to charge a device lithium battery (pretty much all laptop, camera, phones have it) long in the first time to extend the battery life. Could anyone explain why it is so?
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1answer
4k views

Application to only partially charge laptop battery [closed]

I was wondering if there were any software packages out there that will prevent my laptop battery from charging above a specified level. I know there are propriety options out there for Samsung and ...
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1answer
2k views

Are there any Linux distros that are specially made for laptops? [closed]

I have tried and tested Ubuntu, Linux Mint, Arch Linux and Windows. Recently I have come across Open SUSE. I was wondering what are some Linux distros that are specially designed for laptops. I am ...
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1answer
97 views

How can I close/open several programs at once using one hotkey?

I have a lot of things runnning on my Thinkpad T530. Sometimes I'd like to maximise battery life by closing several programs at once. I'd like to be able to reopen them when needed (with or without an ...
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1answer
189 views

Win32_Battery.EstimatedRunTime

According to Microsoft the field EstimatedRunTime of the Win32_Battery WMI class is an Estimate in minutes of the time to battery charge depletion under the present load conditions if the ...
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0answers
16 views

BAD: Using laptop with battery while plugging to mains? [duplicate]

I mean, is it really true? Using a laptop while it is plugged in will lessen the life span of the battery? I'm talking about Li-ion batteries which dominates the newer laptops. I used to plugged it ...
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1answer
95 views

Laptop battery discharge jump/non-linear - replace?

I have a 3yr old laptop, Acer 1810T olympic edition. Battery parameters, as written on the battery itself: 11.1V, 5.27Ah, 5600mAh, 63Wh. What's been happening lately is that it goes normally down to ...
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1answer
110 views

Kubuntu 12.10 laptop battery droping fast

I have done fresh install of Kubuntu 12.10 on my HP Pavilion G6 Laptop. I'm a bit nervous that my battery is not lasting more than 1 hour while for Windows 8 it was lasting for 5 Hours(while using ...
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2answers
509 views

How to prevent PC's system resume

Here's my situation: I left my laptop ON last night and got fully discharged its battery. It has already a hard drive faults. Only a week since the SMART warning always appearing whenever I boot it. ...
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1answer
196 views

Laptop getting shutdown / run by battery after 10 minutes

Laptop is getting shut down after 10 minutes while it's run without battery - but with battery as well as plugged in it runs first 10 minutes by power then automatically runs by battery until the ...
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2answers
444 views

Dell M6700 much slower when connected to external battery pack (Energizer XP18000)

A while back, I bought some external battery packs to extend the battery life of my laptop. They're Energizer XP18000s. But I got the feeling that my laptop was going much slower with the battery ...
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2answers
3k views

Laptop battery software to disable charging AND battery usage

I'm going to buy a Microsoft Surface notebook that does not have the capability to easily remove the battery. I'm also going to be near a powerpoint for around 90% of my usage of this notebook. To ...
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2answers
1k views

Does depleting the battery completely do damage to it?

This question applies to laptops, but also to smartphones or anything that's battery based and rechargeable. Does depleting it completely (Computer won't even turn on, or turn on but shuts down ...
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1answer
138 views

Put and remove laptop battry while working

When I work on my laptop I remove the battery and work on AC power, but some times I want to move the the lap while its on I was think of putting the battery then remove the AC power, and when come ...
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2answers
5k views

Can a faulty battery cause my laptop to shutdown even on AC line? (battery installed AND plugged in together)

Until recently, I experience something rather annoying (and troublesome) with my laptop. It spontaneously shuts down itself without any warning, it restarts. No blue screen, no hanging program, just ...
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2answers
4k views

i7-3537U or i5-3337U - How much does it affect battery life [closed]

I want to purchase a laptop, will be using it mostly for general study work, word, excel, web surfing, movies etc. I finally came down with two dell laptops, only difference with the processor, one ...
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5answers
2k views

Is it normal for a laptop to discharge to 60% when not plugged in and not turned on for 5 days?

I recently purchased a Lenovo IdeaPad Y400 and have noticed that after I do the following: Use the laptop while plugged in Shut down and unplug (it is fully charged at this point) Turn it back on ...
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1answer
100 views

How is battery charge reported to the operating system?

This feels like a stack exchange EE question, but it seems like it belongs here instead. How is the charge of a notebook computer's battery reported to the operating system? Since all laptop ...
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1answer
264 views

My laptop's battery is 46% worn - what can I do?

I've got an Asus Eee 1005PE "netbook" laptop with a 6-cell battery. The usage pattern has always been to let it drain down to 10-40% capacity and then let it recharge during the night. I realize ...
3
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2answers
2k views

Battery plugged in, not charging

This is a new battery and this gives the problem of Plugged In, Not Charging for the past two days. I have no clue as to why this is happening. Sometimes it does, sometimes it does not. Battery Wear ...
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0answers
400 views

Repeating mysql error in OSX console

I'm getting an endlessly repeating set of errors in my mac's console that go as follows: Jan 6 00:21:37 Air com.apple.launchd[1] (com.mysql.mysqld): Throttling respawn: Will start in 9 seconds Jan ...
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714 views

Does a dedicated GPU drain battery life heavily during normal use?

Suppose you have two identical ultrabooks but one uses dedicated graphics instead of using the one in the CPU, if you execute the same office tasks on both machoines (i.e., not gaming) will the ...
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1answer
417 views

Measuring how much battery charge a process uses in Windows

As battery life in most laptops is naturally limited to a few hours, is there any way to know how much battery a process (i.e. Microsoft Word or GNS.exe) is using? Like process A is using this much ...
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5answers
225 views

Macbook started to consume battery more quickly

This seemed to happen after I did several things at once (all of which I have since reversed in trying to track this down): installed a (Crucial M4) SSD drive (replacing my old SATA 5400 RPM drive), ...
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1answer
335 views

How do I interpret the information regarding the Vivobook S400CA battery life?

I'm interested in an ultrabook, but I cannot understand it's battery life's spec. The model's website indicates that it has 44 Whrs Polymer Battery How does this information translates into the ...
3
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1answer
493 views

laptop mode in Linux vs solid state drive (SSD) [closed]

I have a device running Ubuntu 10.04 with SSD drive and want to optimize its power consumption. As far as I understood laptop mode documentation, it is intended for conventional disk drives. Does it ...
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1answer
1k views

Modify Laptop Battery's internal status?

Is there any way to modify the values of the laptop battery to make it fully charge? I assume that these values are stored in EEPROM. I would like to know if there is any tool that can read/write ...
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3answers
9k views

How does limiting a laptop battery's full charge to less than 100% extend its battery life?

My laptop lets me limit how much of the battery will charge before reaching full charge: At first, I understand what the intent is. I know that overcharging a battery will result in degradation of ...
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2answers
1k views

Dell Vostro 3500 battery life remaining missing from Windows 8?

On Windows 7 a Vostro 3500 laptop shows the battery life remaining, while on Windows 8 this information appears to be missing. The percentage is still available, but the life remaining is missing. ...
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1answer
64 views

troubleshooting battery performance (toshiba satellite)

I replaced my old rankling battery with a new one, but something odd is happening, the battery reaches some level (say 30) and then jump straightly to 7% with a dialog box that normally appears when ...
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4answers
3k views

Poor battery life Windows 8

I have an Acer laptop (AS4820TG, it's about 2 years old), and I recently installed Windows 8 to a partition I made on my SSD (now I'm dual booting 7 and 8). My laptop's always had pretty good battery ...
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2answers
333 views

Do live tiles continue to update when I'm not looking at the start screen?

If I glance at my start screen, do I need to wait a few seconds for the tiles to show up-to-date information? Or do they continue to update when I'm not looking at the start screen?
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1answer
302 views

Battery level is incorrectly displayed on Dell Studio 15 with Windows 8

After removing my Dell Studio 15's laptop battery charger I'm not getting the perfect battery level displayed in my Windows 8 task bar. At 82% it displayed 3 hr 32 min and at 75% it's displaying 2 ...
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2answers
628 views

What is the best way to switch off unused wireless keyboard in the range of working receiver?

I recently bought a Logitech Wireless Keyboard and mouse with unified receiver (Logitech Wireless Combo MK220). I did not like wireless keyboard, so I use PS2 keyboard + wireless mouse. No wireless ...
2
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2answers
565 views

Kubuntu 12.04 notebook battery droping fast

I have a simple problem. When I am using Kubuntu 12.04 and doing some simple stuff like IRC, Chrome, Tor and Okular, my battery lasts 1-1.5 hour. With Windows 7 and same kind of programs, it lasts ...
8
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1answer
9k views

Does the samsung “battery life extender” work?

I have bought a Samsung series 9 15inch (NP900X4C), and there is an option called battery life extender : Sets the maximum battery charge level to 80% to extend the battery lifetime. Samsung ...
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3answers
732 views

New HP Mini 2140 netbook battery wrongly reports 40% wear after 2 months of usage

I'm using an HP Mini 2140 with Ubuntu 12.04 installed on it. Two months ago, due to the fact that my old battery lasted only for about 20-30 minutes, I bought a new battery, which reported a capacity ...
2
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2answers
1k views

Is notebook battery life decreasing when fully charged and on AC power? [duplicate]

Possible Duplicate: Should laptops remain plugged in when their battery is 100% charged? When my notebook battery is fully charged and on AC power - is the battery life decreasing (because ...