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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2answers
2k 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. ...
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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
34 views

My laptop battery doesn't charge

my laptop battery is nearly dead (it lasts only 10 minutes), but the major problem is that MANY times (not all) when i put the charger, the system says that there is power but the battery is not ...
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7answers
5k 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 ...
115
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10answers
43k 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
20 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
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2answers
100 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: ...
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0answers
20 views

Is there a way to estimate the current life of my ancient phones battery? [closed]

I have a 3 year old S2 and I wonder if there is a way to estimate how much weaker than new the battery is right now? Something like a percentage (50% of new) or effective capacity(1000 mAh). Is this ...
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0answers
71 views

Samsung Ultrabook Series 5 Cuts out with 50% + battery life left

Initially with 100% battery charge, laptop shows time remaining of around 8 hours. Then with an hour it drops constantly before shutting down without warning when the battery showing around 60% ...
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2answers
46 views

Will stopping a charge cause a decreased life span of the battery

Occasionally, I need to stop battery charging, for example at 50% due to emergencies. Will stopping a charge cause a decreased life span of the battery? Also, will leaving battery plugged in when ...
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0answers
14 views

What depth of discharge does 0% in a UPS correspond to?

When a UPS like an APC Smart-UPS shows 0% charge remaining, does it mean the deep-cycle batteries are completely discharged or that they're at 20%?
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1answer
159 views

Prevent hardware from loading or consuming (battery) power?

I'm using an Asus Zenbook UX32VD notebook and would like to maximize its battery life. Would it be useful for me to disable devices that I do not use, such as the internal bluetooth device? Also, ...
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1answer
76 views

Power4gear purpose and value

Asus laptops have Power4Gear app installed. Beside usual "custom" settings like when screen dims, laptops goes to sleep etc, does it have any other purpose or value? For example, does this software ...
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1answer
64 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 ...
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1answer
41 views

Is it worth replacing a laptop battery? [closed]

I have a Toshiba Satellite U300 from around 2007. It works fine but the battery is dead so I have to plug it in everywhere. I can get a replacement battery for around $100. What sort of battery life ...
0
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3answers
54 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 ...
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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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3answers
336 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?
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2answers
344 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 ...
0
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1answer
54 views

Processor Throttling, Speeds and Battery life

Does throttling the CPU down give you more battery life? Does i3 give you more battery life over an i7? Just I've not had the options to really test this theory as it requires having the same laptops ...
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0answers
65 views

Are those CPU temperature readings too high?

System specs & state: windows 8 running 15" notebook, AMD dual core m340 CPU (from 2010), 8gb ram, newly cleaned fans and internals, no unnecessary background tasks running, laptop is elevated a ...
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1answer
35 views

Computer doesnt charge and harddrive fail after spilling fluids

I spilled tea under my laptop (Dell 7520 15R) yesterday, water got on my rams, hard drive and battery. Computer shut down immediately. I cleaned everything, assembled it and it works fine, except that ...
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2answers
100 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 ...
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0answers
3k 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, and restart right after that. No blue screen, no hanging ...
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1answer
134 views

Retina Macbook Pro battery life [closed]

What are normal figures for battery life on the newest Retina Macbook Pro systems and what could be draining battery. I have tried all of the tips on Apple support discussions and don't know if I ...
0
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0answers
30 views

Is there a way to tell a laptop not to use the battery, besides removing it?

Is there a way to tell a laptop not to use the battery, besides removing the battery physically? I mostly use the laptop as a desktop, but sometimes may need to take it into anothewr room.
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1answer
329 views

Does dirty power shorten the life of a laptop battery?

I have a two year old laptop that has spent most of it's life in a third world country where the power is very dirty*. Does the dirty power shorten the life of the battery or will it have no effect? ...
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4answers
370 views

Does battery life decreases when plugged in or overcharged? [duplicate]

My laptop is always plugged in when it is switched off and i many times forget to remove the charger.
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1answer
49 views

Lenova Thinkpad Edge E430 Battery suddenly decrease from 50% to 7% [closed]

I have using Lenova Thinkpad Edge E430. and i have installed windows 7 and Ubuntu. but i never used Ubuntu. The battery life used to be 3 hour, but now a days it lasts only 30 minutes. When battery ...
2
votes
2answers
876 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 ...
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votes
1answer
124 views

Does windows 8.1 default theme drains more power?

The default theme of windows 8.1, not the high contrast theme, drains lot of power from the laptop battery? (when the laptop is not connected to the power supply). If yes, then which theme to use ...
3
votes
2answers
9k views

Laptop battery charge management software

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 ...
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1answer
106 views

How to accurately determine the remaining time of your laptop battery

I have a big issue with the estimated battery life of my laptop Though it states that i have an estimated 2hrs 23min battery life before the battery runs out , it normally lasts me only 0.7 hrs to ...
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2answers
3k views

Sony Vaio, Battery Problem; Never at 100%?

Every time I recharge my sony vaio, it'll recharge up to 100%. However, in the morning as I unplug it from the recharger, the battery life is always at 80-89% when I begin to play. Why isn't it at ...
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3answers
2k 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 ...
0
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1answer
101 views

New laptop battery charging only until 37% and keeping alive after reaching 0%

I just bought a new battery for my laptop (Sony VAIO). When I plugged it the first time it was 66% charged. I use it until I reached 5% and after that I started charging it. It just got charged until ...
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0answers
292 views

Battery life Samsung Series 7 with Linux (Mint, KDE)

I've been trying all the tricks I can find to reduce power usage on my Samsung series 7 (Ivy Bridge Core i7, AMD Radeon HD 8570M GPU) laptop (running Linux Mint Olivia, KDE version), but it all seems ...
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2answers
28 views

Disabling browsing ads using Flash only

I do not want to block all advertisement. However, I do want to get rid of just the ones using Flash. They drain my device’s battery so fast I cannot allow them. Any browser extensions that take care ...
2
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4answers
248 views

Common battery life tips for any device

Even though many devices are very different, there are often common settings or features that can be turned off (or on, in some cases) to get better battery life, such as background lights. What are ...
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0answers
57 views

Flags to save battery life in Chrome? [closed]

I'm wondering what flags could be switched on/off in Chrome to make it save more battery life.
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3answers
594 views

How do laptop battery voltages affect runtime?

I ordered a new battery for my faithful XPS M1710. I'm not sure of the voltage of the battery I have now, but the new one that the Dell rep got me (after 3-4 times confirming my phone number and ...
2
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1answer
29 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 much ...
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0answers
16 views

How best to prolong lifespan of laptop battery? [duplicate]

Is it best to run the laptop on continuous power adapter (plug in) supply OR on battery? I hear overcharging laptop battery will decrease its lifespan, on the other hand, recharging the battery also ...
13
votes
3answers
4k 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 ...
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1answer
97 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%. ...
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votes
2answers
234 views

Battery is getting drained very fast

My laptop is approx. 18 month old. I have changed the internal hard drive recently and I have Ubuntu installed on the system. The problem is my laptop's battery is draining very fast. When it ...
0
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0answers
70 views

Fedora 19 heats up my laptop

I am having a DELL inspiron N5010 with 1GB ATI Radeon 550v Graphics card, 6 GB RAM and i5 2.4 GHz processor, I am running dual operating systems on this laptop while running windows 7 my laptop hardly ...
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1answer
43 views

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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0answers
583 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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1answer
119 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?