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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140
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7answers
63k 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?
197
votes
6answers
107k views

Should laptops remain plugged in when their battery is 100% charged?

When your laptop's battery is 100% charged, should you leave it plugged in so any battery power doesn't get used, or will that cause overcharging, overheating, etc.? Should the laptop be unplugged ...
23
votes
8answers
1k views

What are some good practices for making sure my laptop battery serves its full life?

Basically, I'm looking for some do's and don'ts. Is it bad to keep my laptop plugged in when I'm not using it (majority of the time)? Is it bad to plug it in once I've finished using it (with it ...
55
votes
6answers
23k views

What is it that kills laptop batteries?

There are many superstitions on what you must never do lest your battery become worthless - and by worthless I mean hold about 16 - 24 seconds of charge. This has happened to every laptop I have ever ...
6
votes
7answers
13k 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 ...
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? ...
13
votes
8answers
7k views

Do newer laptop batteries still need to be drained before recharging?

10 years ago when I was doing hardware support it was best practice to fully drain a laptop battery prior to recharging in order to maximize its life. Is this still the case or can a battery now be ...
7
votes
2answers
21k views

Laptop battery charge management software [closed]

I work on a HP laptop plugged in most of the time, and after few months the battery went off-duty. Of course, I could remove the battery each time the laptop is plugged and place it each time I must ...
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 ...
10
votes
6answers
16k views

What is the impact of leaving a laptop in “sleep” mode (while on battery power)? [closed]

How much battery would leaving my laptop at "sleep" mode consume? is the consumption low enough so that it would be safe to leave the laptop sleeping at nights regularily and using it tommorow? What'...
6
votes
1answer
3k views

Does it save battery to have your desktop background set on a dark color?

Do you think that a laptop consume less power when the color displayed on the screen is darker ? (And even less when the color is totally black) ? I don't mean reducing the brightness or contrast ...
5
votes
2answers
252 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 ...
3
votes
3answers
5k views

Macbook Pro + Windows 7 (bootcamp) = Terrible battery life

I recently put Windows 7 Ultimate x64 on my wife's Macbook pro because of some software she bought for her business. Since then, the battery life has been abysmal. I've identified and researched ...
3
votes
2answers
3k 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 ...
0
votes
3answers
327 views

When to use laptop battery? [duplicate]

Possible Duplicate: Is it better to use laptop on battery or on AC power? When laptop battery is fully charged, what is the best for battery life : use the battery or to use AC adapter (in ...
0
votes
1answer
250 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 ...
4
votes
3answers
7k 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 ...
3
votes
2answers
11k views

Run laptop off AC power without charging battery

It's true that keeping lithium batteries fully charged degrades them quicker than at half charge (PDF). I bring my laptop with me in the day, but run it on the charger in the evenings. Besides ...
3
votes
3answers
8k views

Software to show battery life of laptop? [duplicate]

Possible Duplicates: Find time to charge in windows 7 How can I always display the remaining battery time on the Windows 7 taskbar? What is a small, free piece of software I can use to show ...
4
votes
3answers
456 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 ...
3
votes
1answer
6k 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 ...
2
votes
3answers
425 views

Increasing Laptop Battery Service Life [duplicate]

Possible Duplicate: What are some good practices for making sure my laptop battery serves its full life? I use my laptop as a replacement for desktop. I generally use it for 6 to 7 hours a day....
2
votes
3answers
406 views

Battery on or off while running the laptop on electricity? [duplicate]

Possible Duplicate: Should laptops remain plugged in when their battery is 100% charged? I have an HPcompaq nc6400 but I don't have much information about batteries.when I'm home I run it on ...
0
votes
2answers
389 views

How can I downgrade from Windows 7 to Windows Vista?

My system came with Windows Vista business install on D partition. My friends told me about windows 7 and I decided to check it out. Since I installed it on my laptop, the caliberation of my battery ...
0
votes
2answers
16k views

How can I fix a laptop battery that won't fully charge?

The battery in my laptop (a Gateway EC13N01i) won't charge fully. The charge meter seems to be stuck at 92%. How can I fix this? Please provide step-by-step instructions.
0
votes
3answers
237 views

Doubt about laptop batteries [duplicate]

Possible Duplicates: Is it better to use laptop on battery or on AC power? What is it that kills laptop batteries? I've heard that using a laptop computer on battery mode on a regular basis (...
0
votes
3answers
80 views

laptop battery usage with AC supply

Does the laptop battery get affected by A.C. supply? Does the life of the battery gets affected if run our laptop continuously on A.C. power? All the laptops run on A.C. power when getting fully ...
0
votes
2answers
3k views

How to easily track how long my laptop battery actually lasted?

I have a new laptop battery, and I want to find out how long it actually did last before my PC went to hibernation mode (due to low battery) without me being present. I tried two stopwatches, but ...