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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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 ...
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1answer
363 views

Macbook Battery Charging Troubles

Problem: Occasionally, my macbook's battery will say it's charging and actually won't be. It stays at 0% for a long time. Other info: I thought it was my battery (laptop was 3 years old). Got a new ...
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1answer
407 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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1answer
2k views

Modify Laptop Battery's internal status?

Is there any way to modify the values of the laptop battery to make it fully charge? I assume that these values are stored in EEPROM. I would like to know if there is any tool that can read/write ...
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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 ...
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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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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 ...
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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 ...
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1answer
322 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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253 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
345 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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1answer
122 views

Kubuntu 12.10 laptop battery droping fast

I have done fresh install of Kubuntu 12.10 on my HP Pavilion G6 Laptop. I'm a bit nervous that my battery is not lasting more than 1 hour while for Windows 8 it was lasting for 5 Hours(while using ...
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1answer
356 views

How do I interpret the information regarding the Vivobook S400CA battery life?

I'm interested in an ultrabook, but I cannot understand it's battery life's spec. The model's website indicates that it has 44 Whrs Polymer Battery How does this information translates into the ...
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1answer
955 views

No longer get battery notification or action

I have an Asus n43jf laptop running Windows 7 64-bit. The laptop is a little over a year old. Up until very recently, when the battery would run low, I received a low battery notification, and if I ...
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1answer
228 views

New Laptop Battery

My laptop battery recently decided to kick the bucket, so I bought a replacement. I charged the replacement for approx 4 hours and assuming it was fully charged (only took my last batt 4 hours) ...
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1answer
588 views

Best usage for a laptop being used as a desktop without removable batteries

After reading the information on http://batteryuniversity.com, I realize that one of the best ways to permanently damage a lithium ion battery is to use the battery at a high temperature while it's ...
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1answer
172 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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0answers
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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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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 ...
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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: ...
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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. ...
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0answers
53 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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534 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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422 views

Repeating mysql error in OSX console

I'm getting an endlessly repeating set of errors in my mac's console that go as follows: Jan 6 00:21:37 Air com.apple.launchd[1] (com.mysql.mysqld): Throttling respawn: Will start in 9 seconds Jan ...
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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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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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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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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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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 ...
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146 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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169 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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52 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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884 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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Sudden drop in battery life halfway

My thinkpad x61S just got a new battery. But still the battery drops suddenly from about 50% to 0% in 15 minutes. Even with the new one. I'm running windows 7. Any ideas ?