Batteries are the embedded power-source of a component such as a notebook. It is composed of cells of chemical elements that store energy.

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29 views

Run a program using NVIDIA dedicated GPU only when plugged into power

Under 3d Settings in NVIDIA's control panel, it allows me to choose whether specific programs always start using the integrated graphics on my CPU or the dedicated GTX 960M. Can I create a condition ...
3
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30 views

Laptop adds harsh noise to sound playback while running on battery

I've looked at what others have said to those who asked with similar problems, and it seems to be a power supply issue. The louder the sound I'm trying to listen to is, or the higher the volume, the ...
3
votes
0answers
459 views

Ubuntu 12.04 shuts down suddenly when running on fully charged battery

When I use battery power in Ubuntu 12.04, it sometimes suddenly shuts itself down without any warning even though I am sure that the battery is almost fully charged. This never occurs when plugged in ...
2
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0answers
110 views

Change charge_full_design value in Arch

I recently installed Arch and noticed that acpi was reporting the incorrect battery capacity value, here is the output: acpi -i Battery 0: Charging, 87%, 00:14:12 until charged Battery 0: design ...
2
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0answers
163 views

How to fix the screen blackout in an HP Pavilion dv7-1240us

Many users of the HP Pavilion dv71240-us have had this screen blackout problem. After having the laptop on for a few minutes the screen goes black and there is no way to get it back to normal. Many ...
2
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0answers
111 views

How to keep Windows 7 CSC Service from running down my laptop battery?

I've a new laptop that lasts less than an hour on battery. I've bottomed out the culprit: cscservice. I've been manually turning the service off then on when I'm on battery power. Cycling the trick ...
2
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0answers
1k views

Force Windows 7 to think it is running on Adapter Power and not battery

Anyone know how to make a Windows 7 Laptop think it is running on AC Adapter power? This laptop (HP G62 series) has a usable battery which holds charge but it has a not-official power adapter which I ...
2
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0answers
2k views

My laptop won't power on after an unexpected shutdown

I have an HP 6930 Elite book. I was just charging it in the afternoon yesterday while making a Word document on it and it suddenly got shutdown. No warning, no alert, no notification, just a sudden ...
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0answers
50 views

Can I prevent Windows 7 from restoring my brightess setting when the power state changes?

I have a question regarding Windows 7. I have set different values for the screen brightness when on battery and when on AC power (in the power plan settings). If I manually change the brightness of ...
2
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0answers
201 views

Acer strange battery dissassembly issue

last week I bought an Acer M5-481T ultraportable laptop. Everything was working fine with the laptop and battery until I decided to disassemble it to upgrade the hard drive, which was a few days after ...
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441 views

Acer Aspire Laptop won't charge in Windows 7 Home Premium x64

I have an Acer Aspire 7750-6801 laptop running Windows 7 Home Premium 64 bit OS. The issue is that it will only charge sometimes when plugged in. I thought it might be a hardware issue, so I tried ...
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0answers
146 views

Trackpad and battery on stop working at same time

Gateway E-475M G Windows 7 Professional SP1 Synaptics TouchPad 15.2.20.0 Microsoft ACPI-Compliant Control Method Battery 6.1.7600.16385 It seems that when my battery stops working correctly, my ...
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14 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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0answers
26 views

How to save battery life for notebooks always connected to the AC grid

I have a Toshiba Satellite L50-A-161 with a Li-ion battery. The removal of my Toshiba battery is quite complicated: it is necessary to open the case unscrewing 14 screws and remove the dvd unit. The ...
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0answers
18 views

Toshiba Laptop suddenly shuts down when on battery

I'd be grateful if someone coud help me. My Toshiba L845 laptop suddenly shuts down when on low battery. It doesn't hibernate in the usual way it did. It completly powers off, as if someone had pulled ...
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0answers
12 views

Samsung Series 5 NP510R5E-S01CA battery issue

I was using my laptop one day and it was plugged in but it suddenly stopped charging. It didn't say "Charger connected, not charging" or anything. It was like the cord wasn't even plugged in. I ...
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0answers
13 views

Laptop charger turns off as soon as I plug it in to the laptop. Could it be a bad motherboard?

If I unplug the battery and attempt to power the laptop off just AC it works just fine, but as soon as I plug in the battery the charger turns off. I've tried two different batteries and three ...
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51 views

Lenovo Y40-70 CPU capped when under 40% of battery capacity

My Lenovo Y40-70 caps its CPU at 30% frequency when it's under 40% battery while running on battery. While it's charging, it's fine and always runs at 100% speed. I'm running Windows 10 and have to ...
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0answers
19 views

Compaq CQ61-319WM will not boot from just AC; dead battery has to charge

A friend gave me an old laptop to play around with, and it's exhibiting a peculiar symptom: it has to charge up the battery for a few minutes before it will turn on. The battery does not have much ...
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0answers
17 views

Battery indicator not descending, sudden shut down

my problem is kind of simple, I have a Toshiba laptop with Windows 7. When I use it with battery, the indicator of the battery level doesn't go down, it stays at 100% for about 3 hours (normal battery ...
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50 views

Laptop battery charging/not charging eratically

I noticed today that my HP DV6 6008eg laptop running Windows 10 eratically reports that the battery is charging and not charging. The small LED near the AC plug also changes its colour accordingly ...
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33 views

FPS Skips due to Power Issues, is there anything I can do on my own to fix it?

My laptop skips frames. I tried to pin-point the issue and I finally have. My gaming laptop (Asus, 17.3", GTX 960m, 4gb, 12GB, i7-4k, SSD). It used to work at full-speed (All Max SC2 at ~100 fps), ...
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47 views

Luminous UPS turns off automatically when system left idle

I have Luminous UPS. When my UPS is on battery mode and system is idle it automatically turns off my computer. I have made sure it’s not due to low battery because when I start the UPS again it works ...
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0answers
29 views

Prevent Windows 8 from booting when battery is low

Is there anyway to prevent Windows from booting when the battery is below a certain point (say 20%)? The reason I ask is that my current computer doesn't have any way to check the battery when it's ...
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0answers
108 views

How do i get 100% battery charge back with Samsung battery life extender?

I use a samsung netbook which i have been using for almost four months now. I have been using the samsung battery life extender since the first time i used the laptop. I decided to turn it off due ...
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0answers
3k views

APC Smart-UPS X 1500VA Warning State: Connect Battery

I have an APC Smart-UPS X 1500V which I just connected to a power source. When I turned the device on it was beeping and giving a flashy red light at the most right icon of the control panel. The ...
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228 views

laptop not charging with battery and not starting without battery

Me and my sister have identical laptops. Whilst i was using my laptop i noticed that the laptop was indicating it was charging however the battery power level was decreasing. So it knew the adapter ...
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0answers
67 views

OSX - Stop Bluetooth Low Battery Message

I've seen this asked before but never any solution. When using the Apple wireless keyboard and trackpad a message pops up when the battery level gets down to 15%. When you click the message away it ...
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0answers
48 views

How to make laptop only start charging when under 20% while always plugged in?

I want my laptop only to charge when under X% of battery is left, while always plugged-in to charger. I have a laptop that has to be up in running for long periods and I want to lower the ...
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0answers
273 views

Dell Vostro 3560: 3NB8W3 battery not recognized, problems with charging

I've been using standard battery for a while, but finally I bought extended battery (3NB8W3, 11.1v 8700mAh 97Wh). Sadly, my Vostro 3560 does not recognize battery properly. I always have "Plugged in ...
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272 views

Some CMOS Settings Not Retained on Reboot. Battery good

Some CMOS Settings Not Retained System: Dell Inspiron 546 Motherboard: DELL F896N 0896N Experience: Advanced Issue: Some CMOS settings are not retained after saving and reboot. Some CMOS / BIOS ...
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132 views

CMOS battery issue

The 5+ year old CMOS battery in my PC died and the BIOS lost it's settings. I replaced the battery but the same problem persists. As soon as I plug the PC into the power outlet, I get 4 beeps ...
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306 views

packard bell easynote te69hw cannot set screen brightness to maximum when charger is not plugged

I just bought a new laptop and there is something that's been annoying me, when am using the laptop with the battery only the screen brightness lower itself automatically, but the problem is that the ...
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0answers
355 views

My asus laptop shuts down unexpectedly when unplugged

My asus laptop shut down unexpectedly when unplugged ... even with battery charge over 50%. The OS installed is Linux, and it is set to shut-down at a critical percentage of 5%. It doesn't look ...
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0answers
427 views

Battery charge management on Ideapad

I have a Lenovo Ideapad P500 with Linux Mint installed. For some reason the battery only charges up to 59% and then it stops. I've seen similar problems solved for Windows, but not for Linux Mint. Is ...
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607 views

Toshiba Satellite C50 A-1JM won't boot with battery plugged in

I am having some odd problems with my Toshiba Satellite C50 A-1JM laptop. For the last two days, it has not loaded past the boot screen for hours, if at all. When I force the laptop off and switch it ...
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0answers
114 views

Laptop battery completely discharges while in the laptop, even when not in use

My Laptop Battery completely discharges while in the laptop, even when not in use. I fully charged the battery, removed it from the laptop, and kept it separate. After 3 days I checked it and it was ...
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51 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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0answers
26 views

Using Perl to communicate with Nut

I'm trying to communicate with my UPS that's managed using NUT. I want to read values from it like line voltage, battery charge, etc. I don't want to send it commands to shut it down. At first I was ...
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0answers
200 views

Can short circuiting kill a USB cable?

I have a power strip and four things were connected to it. My air filter, laptop, Samsung Galaxy Tab, and Motorola Droid 4. For the phone and the tablet, there are actually 2 components to the ...
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0answers
173 views

30% CPU usage when charger unplugged. When plugged in, cpu usage drops to 2%

I have checked by external debugger and it seems that batteryservice:update start runs 10 times per second. Other battery processes are running very often too, only with charger unplugged. It's brand ...
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0answers
890 views

Removing support for Lenovo's Battery Safeguard “feature”

Lenovo laptops now include a Battery Safeguard "feature" that disallows use of third-party batteries in models made after May 2012 or so. It appears this "feature" is provided by a Windows driver as ...
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0answers
1k views

Dell Inspiron laptop not starting

I have a Dell Inspiron N5010 dual booting Windows 7 and Ubuntu. It was running fine earlier, but suddenly it started mistyping letters with multiple letters and special characters for one second and ...
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0answers
533 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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0answers
181 views

Trying to run computer off DC but monitor is always blank

I am trying to get a computer to run off a DC battery. The computer seems to start fine (the CPU fan spins and the hard drive whirs), but nothing displays on the monitor. It just stays blank, as if ...
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132 views

Solid State Battery vs Lithium (ion or polymer) Battery

Background: It's a hardware related question. I was suppose where should I ask this question, after reading http://meta.stackexchange.com/questions/57998/hardware-questions-and-stack-exchange I am ...
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0answers
225 views

Line Interactive UPS battery maintenance

I am going to buy a Line Interactive UPS (around 600VA/360W with one 12V/7AH Lead Acid battery - probably PowerWalker VI 650 LCD, or Cyberpower Value 600ELCD, or any other...) for my PC needs, and ...
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813 views

CPU performance monitoring and diagnosis Maximum Frequency drop

Question: what might be the reason why the maximum frequency goes down to 49%, while this is not sufficient to run existing processes? (please note if I am wrong in interpreting that CPU usage is ...
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96 views

Windows should display warning when on battery

I have purchased my first laptop recently. But, the problem is many times I forgot to connect it to power supply. Due, to which all of my battery get exhausted and I get warning when it is only 10% ...
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56 views

How can I confirm my new notebook battery is genuine?

I have just purchased a replacement for HP DV6 Pavilion laptop battery from a local store in my country. I am not sure that the battery is genuine. How can I check and confirm that the battery is ...