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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4
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2answers
556 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 ...
10
votes
3answers
13k 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 ...
0
votes
1answer
11 views

Hard disk keeps turning off when “Battery Saver” mode is on, despite all setting

I have changed all settings regarding hard disk turn off time to "never" in all power plans. Still when Windows 10's Battery Saver feature is turned on, the hard disk keeps shutting down after a few ...
0
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2answers
9k 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 ...
0
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2answers
35 views

What is the difference between 3 cells, 4 cells and 6 cells battery

I am going to buy new laptop but there is some confusion in battery capacity. I found that 3 cells battery backup is good than 4 cells battery laptop but I read somewhere that more cells means that ...
0
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1answer
7 views

Unexpected shutdown when not charging

I have come across an issue with my laptop today,it is a toshiba satellite and it is more than 3 years old. I unplugged it earlier today and after a couple of minutes,it shut down instantly;no blue ...
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0answers
14 views

Can contemporary batteries report on their health status?

The battery on my laptop is weak and I have a bunch of spare ones I could reuse. One problem, though, is to quickly estimate which ones are "better" than the others. Windows (7, 8, 10) have the ...
0
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0answers
39 views

Significant drop in battery life on new laptop

I got an Acer Aspire V Nitro about 4 months ago and I've noticed a really large drop in battery life lately, despite attempts to fix that. Unless I really need it (games, which I rarely play, or ...
0
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1answer
52 views

How to properly take good care of your laptop battery if you're not really going to use it a lot?

I probably never ever have my batteries inside my laptops except in extremely rare situations (those on average happen something like once per two years, if at all) when I need to unplug one of my ...
6
votes
7answers
12k views

Battery charge suddenly drops from about 25% to 6%

I own a Lenovo Y500 series laptop. The battery being an year old lasts only 1 hour. But the strange thing is that, when the charge comes down to 25-20 it drops to 6%(critical battery level) in a ...
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0answers
67 views

How do I disable devices to conserve power?

I run ArchLinux on a Lenovo G series and downloaded powertop and it says that USB bluetooth and "USB device: Lenovo EasyCamera" are drawing a lot of power. While it advised I implement these rule: ...
0
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0answers
92 views

Should I keep my new Lenovo laptop plugged in?

I usually keep it at home. Is it alright to use it plugged in? I don't want to mess up the battery. I love how smooth the laptop runs plugged in and I don't want to strain the battery by changing ...
3
votes
2answers
12k views

Enable Lenovo's “conservation mode” on boot

I have a Lenovo Z50 laptop with Lenovo's Energy Manager installed. Inside the manager's settings menu is an option to enable "conservation mode", which keeps the battery charged in the 40-65% range ...
0
votes
1answer
928 views

Lenovo (T500) battery manager

First of all, sorry for asking 2 questions on one day (the two are totally unrelated). I've got an extended brand Lenovo battery and a Windows 7, with the Lenovo made power manager for Windows 7. My ...
3
votes
5answers
3k 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 ...
2
votes
3answers
18k views

Lenovo laptop: Is it ok to leave the battery charging while it is being used? [duplicate]

Is it ok to leave the battery charging while it is being use? Or is it ok to keep the power plugged in with full charged battery while the laptop is in use? Can this shorten battery's lifespan?
0
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0answers
30 views

is it possible to “reset” the counting mechanism of power manager for battery maintenance (Lenovo)

Lenovo thinkpad provides a power manager software that allows for battery gauge reset. It's a hunch but it seems that there is a counting mechanism every time I "perform reset". In early days when I ...
0
votes
1answer
796 views

Turn off battery life warnings from Dell Feature Enhancement Pack

How to disable this annoying message that probably appears on any Dell laptop after about one year of usage (my personal experience from 3 different laptops)? My Dell Feature Enhancement pack ...
0
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0answers
18 views

Sony Vaio Notebook - Automatic shift in Low Battery Level %

I have Sony Vaio VPCYB15AG notebook. It has a built-in low battery warning indicator (Blinking LED) that operates independent of the OS i.e. it gives this warning even if no OS is running. Earlier ...
140
votes
7answers
61k views

Is it better to use a laptop on battery or on AC power?

When I'm at home, is it better to use the laptop plugged into AC power, or with just the battery, for the overall battery life?
2
votes
2answers
6k views

Does “use hardware acceleration when available” feature in google chrome consume more battery?

I want to know when i enable "use hardware acceleration when available" feature in google chrome, it consume more battery? what is the advantage of this feature? is it better to enable or disable this ...
10
votes
5answers
10k views

How do I keep a MacBook battery charged to only 70%?

A chemist told me that a battery should be charged to and used between 30-70%, and its very bad for battery life to completely load or unload it. He uses a utility program that always keeps the ...
0
votes
1answer
57 views

When is it time to replace a laptop battery? [closed]

My laptop battery life has degraded substantially. I downloaded and ran BattStat, a battery status monitor. It tells me: Capacity is 37829mWh (of 65664). Also, under "Info": Li-I, 0 cycles, 42% ...
3
votes
3answers
194 views

How do I know how much power is left on my external battery?

Our IT consultant persuaded us to add an external battery pack to our dying UPS, rather than buy a new one. The UPS still counts down from about 4 minutes after the AC power is removed, but continues ...
0
votes
1answer
32 views

Macbook Pro Battery Life: Battery vs. Power Adapter

What is better for my Macbook's Pro 13' 2015 battery life: 1) Loading it to 100% and then using it to ~20%, loading it again OR 2) Using it plugged in to the power adapter all the time?
0
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0answers
7 views

Does keeping pc in sleep mode for long time affects it in anyway? [duplicate]

I keep my laptop in sleep mode and sometimes I forget to switch off when going to sleep and it stays like that most of the time. So is it a bad practice like can it affect the performance of the ...
1
vote
2answers
495 views

What consumes laptop battery when it is turned off?

My Toshiba laptop consumes battery while it is off. At night I usually turn it off and unplug the power supply. I noticed that when I turn it on again the battery is no longer full but around 90%. ...
3
votes
2answers
3k views

What is the “known hardware incompatibility” that disables PCIe Active State Power Management? How do I fix it?

I'm on Windows 7. I just ran a Power Efficiency Diagnostics Report through powercfg -energy and I got this error: Platform Power Management Capabilities:PCI Express Active-State Power Management ...
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vote
2answers
75 views

Missing Battery Health Warning Checkbox - Window 7 SP1 - Vaio Netbook

I am using Sony Vaio Netbook with retail Windows 7 SP1. I somehow felt (but not very sure) that battery might have drained quickly today. I remember there is a setting something like ‘Warn if ...
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votes
1answer
57 views

How to keep and restore OS state when electricity was goes off?

I am using laptop and want to not lose my operating system running state when electricity was goes off. Of course this question can be solved by using a laptop battery or external power supply (such ...
8
votes
5answers
12k views

Fastest way to drain battery

I'm using Mac OS X 10.7.1 on a Macbook Core 2 Duo. What's the fastest way of draining the battery without crashing the system and preferable by using some sort of a script?
2
votes
2answers
83k 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 ...
0
votes
1answer
48 views

Does charging a windows phone with a PC have any negative effect on the battery?

My wall charger stopped working all of a sudden and my office is far from where I can get another one, the only option is to use my office PC to charge with the use of USB. So, I'd like to know if ...
2
votes
1answer
46 views

Close programs when on battery

Is there a Windows application or a script that kills programs when my laptop in not plugged in (and preferably relaunches them when charging)? I have a few background applications that use too many ...
4
votes
3answers
392 views

Do same size screens with different PPIs affect battery differently?

I was trying to find out if screens with different resolutions have different effects on the battery life. Around the net, I see a common answer as no to the question: "Will changing screen resolution ...
4
votes
1answer
23k views

Low battery notification doesn't show up in windows 7

On my Lenovo Y410 model laptop I've installed Windows7. Earlier I used to have Windows XP. In XP I used to get low batter notification when my battery reaches 10% life. In Windows 7 I've even set the ...
0
votes
1answer
40 views

Is there a way to make sure that my laptop doesn't exit sleep-mode?

I often have the following problem: I pack up my laptop, but forget to unplug/turn-off my mouse before doing the packing. Then soon after, I'll move the mouse.. causing my sleeping PC to wake up ...
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vote
2answers
1k views

How do I turn off MagSafe light?

When I go to sleep at night, the two green lights (emitting from both sides of the MagSafe connector of my 13" MacBook Air's power adaptor) light up my whole room. How do I turn these off? I ...
1
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0answers
278 views

How does Windows 10 calculate app's battery drain?

I just got Windows 10, and its "Battery Usage" screen in settings has me confused. I've had Eclipse (the IDE) open pretty much every second since I upgraded to Windows 10, but you wouldn't be able to ...
0
votes
2answers
89 views

Will keeping my new MacBook continously in charge damage the batteries? [duplicate]

I just bought a new MacBook, which I'm primary gonna use as a "desktop pc" (in office). Not always, but for large period of time (~ a month without moving it from my desk). I would like to ...
-1
votes
1answer
120 views

Is it okay to store a laptop for one year without taking any precautions [duplicate]

No precautions have been taken to store the computer. It is sitting upstairs on a bookshelf. It is an HP pavilion laptop. I read this Super User blog. I don't understand if this computer will ...
0
votes
1answer
45 views

how to correct first battery discharge for smartphone

I would like to know how to take corrective action on the first charge cycle. I have just bought a new smartphone and completely discharged before full charging. However i just came across articles ...
0
votes
1answer
60 views

Low CMOS battery but it's brand new [closed]

When booting my old PC it says low CMOS battery so I replaced it with a spare battery which I bought a few years back. Upon booting from power-off state, it still says low CMOS battery. Is it ...
0
votes
0answers
37 views

Lenovo battery not charging when in use

I received my NEW Lenovo lap top G50 computer and when I am using the computer, I have it plugged in and "charging" but it does not charge. If the computer is shut down and plugged in, it will ...
-1
votes
3answers
61 views

How to make laptop's battery last long? [duplicate]

My uncle warns me to use laptop after charge.But sometimes I use it during charging,like...when I am watching videos or working my homework.I want to know that is that good to use laptop during charge ...
5
votes
2answers
217 views

Brand new laptop, two years in storage, will the battery be ok?

I have an opportunity to buy a brand new (sealed box) EliteBook 8470p laptop for a good price. The date of manufacture goes back to around March 2013, which is bang on two years ago. Given that it's ...
0
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3answers
4k 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 ...
0
votes
1answer
51 views

Intel Broadwell Power Consumption and Clock Speed

I'm configuring a new MacBook Pro 15″ 2015 and wanted to know if the processor speed affects the battery life (power consumption) assuming that the work load is identical? 2.5GHz Quad-core Intel Core ...
0
votes
2answers
596 views

Is it fine to run a dc motor through USB cable connected to my laptop?

I have a dc motor which needs more than 10V to run efficiently, so instead of running it on electric cells, I usually run it using my laptop's power. I connect a USB cable to my laptop and the other ...
30
votes
4answers
2k views

Battery Life Practice

What should i do with my battery to have it live the longest? I was told the few first timing it i should let it completely drain then charge it. Should i leave it completely drain for a few days? ...