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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Custom Windows Power Plan Issue

When you create a custom power plan in Windows 10 using one of the existing power plans (High Performance, Balanced, Power Saver) as a template, are those power plan "templates" simply a grouping of ...
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9 views

Why isn't the OEM-provided (Sony) battery health monitor working?

I have a 2010 Sony Vaio Z11 (a very nice laptop, I might add) which has a 9-cell "extended" battery attached to it. When my laptop was new, 6 years ago, I got a full 7 hours out of it - which would ...
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6 views

Is auto-sync really the biggest battery killer? [migrated]

I have been digging the archives for eternity to find that Location Services and Auto-sync (assuming we ignored other factors such as Bluetooth etc -- because my focus is mainly about auto sync) are ...
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1answer
23 views

Prolong battery life [duplicate]

What are the general guidelines for maintaining the laptop computer battery? -Is using the laptop on battery,disconnected from outlet,better or is the opposite true? -If the computer is performing ...
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1answer
13 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 ...
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2answers
44 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 ...
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1answer
8 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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16 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 ...
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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 ...
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1answer
53 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 ...
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38 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 ...
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21 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 ...
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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% ...
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1answer
36 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?
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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 ...
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1answer
1k 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 ...
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2answers
80 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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1answer
58 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 ...
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1answer
50 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 ...
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3answers
411 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 ...
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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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3answers
209 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 ...
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283 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 ...
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2answers
97 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 ...
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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 ...
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1answer
48 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 ...
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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 ...
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1answer
61 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 ...
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3answers
64 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 ...
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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 ...
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2answers
682 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 ...
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24 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. ...
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1answer
2k 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 ...
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1answer
508 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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68 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: ...
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2answers
227 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 ...
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1answer
215 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.
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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 ...
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1answer
327 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 ...
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2answers
82 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 ...
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2answers
293 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 ...
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1answer
1k 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 ...
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3answers
2k 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 ...
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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 ...
2
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1answer
4k 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 ...
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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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1answer
15 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 ...
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27 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 ...
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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 ...
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70 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. ...