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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2
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1answer
45 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
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2answers
6k 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 ...
1
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2answers
513 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
51 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
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2answers
40 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
88 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
26 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
42 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
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0answers
23 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
47 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
128 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
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 ...
0
votes
1answer
37 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
164 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 ...
3
votes
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 ...
29
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? ...
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0answers
22 views

How can I set a 80% battery charge limit for a HP Ultrabook? [duplicate]

I really hope you can answer this simply request. Nowadays is pretty common to have a new Ultrabook, laptop or notebook for general purposes. A very important feature is to have a healthy battery. ...
5
votes
2answers
16k 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 ...
3
votes
2answers
9k 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 ...
7
votes
4answers
7k 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?
1
vote
1answer
617 views

Alternative to Lenovo “Conservation Mode”

I have a Lenovo Y50-70, which I am doing a clean install of Win8.1 on (A new SSD) The Battery software that comes with it out of the box contains a very useful battery conservation mode. This stops ...
1
vote
1answer
537 views

Extremely Wrong Battery Life

I am running Windows 8.1 on my Dell Inspiron 15", and when I click on the battery icon, it shows an outrageous battery life, which makes no sense: like 58 hours and 44 minutes (42% remaining). How ...
1
vote
1answer
204 views

Run time difference between a 4-cell (43 Wh) battery and an 8-cell (58 Wh) battery?

Is there a significant improvement in battery run time going from a 4-cell (43 Wh) battery to an 8-cell (58 Wh) battery? How much longer will it run (percentage-wise)?
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0answers
43 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: ...
21
votes
8answers
985 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 ...
2
votes
1answer
81 views

How does windows calculate time left for a battery?

I assume the relatively new versions of windows calculate the battery remaining the same. If not, to avoid broadness, show the calculation for windows 8/8.1.
0
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1answer
1k 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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1answer
1k 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 ...
0
votes
1answer
186 views

Connected Standby eats battery when wlan is down

I use a surface pro 3 and connected standby usually works like it should: I close the cover, the surface enters standby mode, when.I open it hours later it's immediately ready and barely lost battery ...
9
votes
4answers
8k 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
2answers
72 views

For better battery backup whether we have to start charge the laptop when battery about to drain? [duplicate]

I recently purchased a laptop ,I have get suggestions from so many people that we should start charging laptop when battery is about to drain and the reason I am getting is battery will last for ...
0
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2answers
139 views

How to measure how long it take's for a laptop's battery to charge

I have the following scenario: I am testing several laptops with Windows 8.1 installed. One of the tests is to measure how much the battery lasts. For this task I use benchmarks like PeaceKeeper or ...
0
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1answer
370 views

My laptop battery discharged in sleep mode?

My laptop computer is an Acer Aspire M5-583P-6428 touch screen laptop computer. Its specs are as follows: Intel i5-4200u Quad-Core Processor Intel HD 4400 Integrated Graphics 500GB hard ...
0
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3answers
767 views

Why does reducing CPU frequency improve battery life?

Shouldn't we have roughly the same battery life regardless of the frequency since the higher the frequency is, the faster tasks will complete so in the end the CPU, despite running at a higher ...
14
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4answers
6k views

Laptop Battery Technology

My laptop battery has finally taken the plunge and I'm looking online for a new one. However I'm getting lost in all of the specs of the batteries that are out there. I'm looking to gain a better ...
0
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0answers
321 views

Force-reset laptop battery statistics

On my Acer Aspire S3 laptop-of-almost-3-years BatteryInfoView says that the battery's capacity is at roughly 35%. So, whereas once it would hold for 4,5 hours, now it's down to 1:45 at best. However, ...
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1answer
3k views

How to get rid of “Consider replacing your battery” warning in Windows 7 power settings

When I turned on my laptop (Acer Aspire S3-951) today, I saw the following message under the power icon. I know that my battery is 61% degraded, but how do I get rid of the extra text that says my ...
3
votes
4answers
2k views

Wireless Keyboard/Mouse: Should batteries be removed when not in use?

I recently bought a Logitech Wireless Keyboard and mouse. I use it almost daily but for a couple of hours only. The keyboard has 2 AAA batteries and the mouse has 1 AA battery. The box mentions that ...
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1answer
14 views

Buying the correct battery

Looking at getting a new battery for an HP elitebook 2560p. However, there are many 9cell batteries running different mAh from 6600mAh to 9000mAh. Is there a big enough benefit in buying a 9000mAh ...
6
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3answers
29k views

Re-calibrate Toshiba battery meter with Windows 7

I have a Toshiba U300 laptop. Back in the olden days (circa-2000) you could re-calibrate the battery meter from the BIOS when your battery was no longer reading accurately. My battery was shot, so I ...
0
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0answers
26 views

Am I ruining my laptop battery? [duplicate]

I have a brand new Asus ux303ln. The laptop is fine but I use it mostly for work. That is: le laptop is continuosly plugged in, on charge. I am worried whether this can reduce the life of my battery ...
185
votes
6answers
90k 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 ...
6
votes
5answers
9k 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 ...
0
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0answers
61 views

Laptop suddenly off without notice the battery level

My laptop is HP Probook 4540s and running on Widows 7 32bit OS. My battery may be week now. But the problem is Laptop suddenly off without notice the battery level. Not shutting down or hibernateing. ...
4
votes
2answers
3k views

Why is keeping my Mac battery 40%-80% charged advantageous?

This article from Lifehacker notes that keeping my Mac battery 40%-80% charged is advantageous. ...
3
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1answer
5k 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 ...
6
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7answers
8k views

Can I reduce the CPU speed of my MacBook when on battery?

I've got a MacBook with a Core 2 Duo CPU. I've got CoreDuoTemp installed which can show the current speed of the CPU. It appears to always show: Mini : 1.0 GHz Maxi : 2.0 GHz Current : 2.0 GHz I ...
133
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9answers
55k 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?
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0answers
65 views

How should i use my new lenovo laptop(power supply)

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 dont want to strain the battery by changing ...
2
votes
2answers
689 views

Why is there such disparity in battery life between wireless mice?

When comparing the specifications of wireless mice, the battery life figures I encounter (as reported by both manufacturers and users) can be wildly different, even between similar mice. For example: ...