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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189 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 ...
2
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0answers
151 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 ...
2
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0answers
273 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 ...
2
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0answers
137 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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0answers
10 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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13 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
71 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
60 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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124 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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263 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
260 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
69 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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125 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
88 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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282 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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0answers
44 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 ...
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80 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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0answers
52 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 ...
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283 views

How do I change power settings on my laptop to hear audio while running on battery?

I have a Lenovo ThinkPad with Windows 7. I can hear sound when my laptop is powered up on AC power. While on battery power I can not hear streaming media, such as YouTube. I was informed that I ...
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351 views

Dell XPS M1330 BIOS upgrade adversely affects battery behavior

I upgraded from A11 to A15 using the executable M1330A15 (via DOS) and was successful. Before the upgrade, I left the laptop alone for several months. The battery showed 4 out of 5 pips when ...
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1k views

Asus laptop not retaining Aero theme when unplugged

The problem i'm having occurs when i unplug my laptop, it disregards several elements of my theme. The taskbar gains "auto-hide". My desktop background is turned white. The transparency on my ...
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0answers
143 views

Procedure To Operate Gateway M-6848 On Mains Only Without Battery Installed

Gateway support told me I could do this but since my system (Gateway model M-6848 running Vista Home Premium) is no longer under warranty (or it's some kind of state secret), they won't inform me of ...
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9 views

Thinkpad E420S powers on but doesn't boot for 15-20 minutes

What exactly is happening is: I shutdown/hibernate the laptop after using the day before and go to sleep The next day when I turn on the laptop - the thinkpad 'i' lights up (stays up) and the fan ...
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25 views

Would intermittent contact with the service voltage and capacitors in a power supply (inrush current) damage a computer?

If I plugged my laptop AC Adapter power cable into a UPS, causing sparks to blast out (and being unable to insert it due to the UPS being seemingly not designed for this type of plug, for whatever ...
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18 views

HP pavilion dv6 blank screen, power but no hd Led

I have been dealing with this HP dv6 all day with no luck. Working fine yesterday but today I get nothing but a blank screen. I can hear fan come on, and a few keyboard lights come on, but nothing on ...
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63 views

Vaio VPCSA Battery Not Detected

Out of nowhere my Vaio VPCSA stopped detecting the battery. My battery was working fine. I was getting a couple hours of streaming video on just the battery. Then last night, while on AC, the battery ...
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26 views

Archlinux - Battery detected only on AC plug/unplug

I use Archlinux on a new Dell Inspiron 14. I need to plug/unplug the power cord to have the battery detected. For instance, now, the battery icon tells me that no battery is connected and $ ls ...
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0answers
90 views

How to optimize battery lifespan of Lenovo Z510?

I just bought a Lenovo IdeaPad Z510 laptop, and before I boot it for the first time, I want to make sure to know the exact proper care to ensure the best optimization of the battery's (4 cell 48 ...
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0answers
81 views

Dell BIOS update appears inefective

My Dell XPS M1330 currently has BIOS version A11 which is too outdated to install windows 7 Home Premium. I followed the instructions on the Dell support site, downloaded the appropriate BIOS update ...
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0answers
107 views

Switching to pre-mavericks low battery notifications OS X

I turned off notification center on my mac because, well, I despise it. The one notification I want is a low battery warning, but that has been moved into notification center on mavericks. Is there ...
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0answers
35 views

What is the most effective way of using a MacBook Pro with an external monitor?

I have an early-2013 MacBook Pro with Retina Display 15-inch and it has been working amazingly for the past year. I spend around 8 months at school and 4 months at home. In school, I need the laptop ...
0
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0answers
26 views

HP 630 notebook loosing battery charge without any reason

I have a HP 630 notebook that runs on Windows 7. I think its loosing battery without any reason. I felt so because, its not showing the same battery charge level when switched on. So I decided to ...
0
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0answers
20 views

How do I disable new device detection in Windows 98? System freezes when installing ACPI Battery

So, I have Preperad an external USB HDD in VMWare with Windows 98 SE on it and unofficial Service Pack 1 and 2 installed. It works fine in the machine (windows 98 SE boots nice FROM USB! wow, in the ...
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0answers
20 views

Random battery life display on laptop

I have a problem with my laptop, mainly the battery display always shows battery is at 100% capacity with random time left ( like 70 hours left), the computer shuts down without any warning since I ...
0
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0answers
49 views

CMOS battery lifespan

How long does it take for a CMOS battery to STOP working since the first instance of a failure. For example, if a CMOS battery fails on Jan 1, but then works without problem until May 1 (four months ...
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0answers
155 views

Battery icon says charging - but its not really plugged in. Samsung notebook win 8.1 issue

I have a series 9 samsung laptop recently upgraded to 8.1. It suddendly stopped charging the battery when it is ON, but it does when its turned off or sleeping. Therefore I beleve its software ...
0
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0answers
11 views

Debugging power on issue

First off I don't know if this is the correct fora, for this kind of question. My personal Acer Aspire 5745G has an issue, namely that it usually has issues powering on. The issue is that when the ...
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0answers
207 views

Macbook Pro 2011 Battery won't charge after it drained out 100% plus can't boot

My macbook was working fine until my magsafe charger's pin got broken. I unplugged magsafe charger as it was not charging and had faint green light. I continued to use Macbook until all of the battery ...
0
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0answers
20 views

Hp laptop freezes when power plugged in

I am using HP-8510p Laptop my problem is when I plugged in my charger it stop working and all the things got freezes. I have changed following settings but no result: Removed the battery and pressed ...
0
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0answers
26 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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12 views

Battery detection issue

I have compaq presario cq40 model. Recently I purchased new original battery but while starting laptop with direct power supply battery is not detected & not getting charged. what may be the ...
0
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0answers
38 views

Does the laptop power supply the SATA drive from battery even being powered off?

I have a Fujitsu Lifebook s762 with a native SSD drive. After a couple of months or so - the SSD became the "brick". I read the article and remembered, that just before the failure, I shut down the ...
0
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0answers
367 views

Battery detected but not charging (remains 0%)

I've recently bought a new, 6600 mAh battery for my Acer Aspire One Netbook (AOA110, ZG5 Model) that refuses to charge. My adapter will charge the old battery (although it only lasts 10 minutes), so ...
0
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0answers
50 views

Enable Samsung power plus for laptops

i'm using a samsung NP300V5AI laptop. Which has a samsung power plus feature where they allow you to stop charging your laptop battery when it reaches a certain limit below 100%. According to ...
0
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0answers
35 views

T61 Thinkpad beeps when almost fully charged

my Thinkpad continuously beeps when almost fully charged (like 90% charged), but when it is low on battery and charging, or not charging at all it doesn't beep. I had a similar problem in the past ...
0
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0answers
21 views

Full CPU power with AC power and battery

How to check if my computer (Lenovo, Intel Core i5 running Windows 7 64bits) is running with full CPU power when both AC powered and battery-powered ? There are so many places (BIOS, Windows control ...
0
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0answers
91 views

Laptop dies and does not complete boot process if not on AC, yet battery is fine

My laptop, after a hard 6 years of use, is finally showing signs of electrical wear and tear through a myriad of strange issues, this being one of the least severe of them. I've experienced recently ...
0
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0answers
39 views

System can't boot and start

When I updated my Windows 8 to Windows 8.1 my battery got submerged. Now the system can't start and it can't boot CDs. When I start the system it says: ...
0
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0answers
40 views

How to undo a failed SSD install

Yesterday, I tried to install a Kingston SSD that I've bought, in place of my Acer Aspire M5-581TG-73516G52Mss's "existing" 20gb SSD. There were a few issues, however: The laptop did not contain a ...
0
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0answers
52 views

SONY VAIO vpcee31fx laptop battery

I recently bought a new 19.5v battery for my SONY VAIO vpcee31fx. I also bought a power supply which was a little larger amp (but still 19.5v). The power supply used to charge the battery quicker. Now ...