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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2
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0answers
21 views

Why has my Battery Icon stopped updating in Linux?

I noticed something funky happening over the past week. My battery icon stopped updating. For a more specific definition, here's the expected and current behavior in detail: Expected Behavior ...
0
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1answer
27 views

Battery Notification

I brought a new Toshiba laptop battery. It is getting a charge and when unplug power it discharges, but it doesn’t shows the battery notification when the battery becomes low. Instead it will get ...
5
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2answers
82 views

UPS - practical maintenance advices to help end-user keeping batteries (classic lead acid models) in good shape

I have read that most (maybe all?) UPS devices for personal computing have lead-acid batteries inside. As long as its chemistry, compared to lithium-ion, is very different, I would like to know ...
0
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0answers
10 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 ...
1
vote
1answer
112 views

110v - 220v at USB charging [closed]

During my stay in the US, I bought a bluetooth wireless water restistant speaker that works with a 500 mAH UL listed battery and as it's manual states, it can be charged "using any USB port", ...
0
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0answers
22 views

An external USB battery pack that does not power off peripherals when charging it [on hold]

I am in a search for the perfect UPS/battery backup for my Raspberry Pi, and I am taking a different approach to this than most folks do (shared among them the need for the device to be as ugly and ...
0
votes
1answer
77 views

How to initialize a lithium-ion battery?

I just bought a lithium-ion battery for a Lenovo ThinkPad T61, and frustratingly it displays being able to charge only at 91% of its design capacity (65.16 Wh out of the designed 71.28 Wh). ...
0
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0answers
19 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 ...
0
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0answers
20 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 ...
2
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1answer
1k views

EEE PC won't charge when in use

I just bought an Asus EEE PC 1015BX, which runs on Windows 7. My problem is that the battery doesn't charge when I'm using the computer. It doesn't discharge either, it just stays at the battery ...
0
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0answers
8 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 ...
0
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2answers
21 views

Can I charge my laptop using an External laptop charger?

How can I charge my Gateway laptop without using a computer? My battery cannot be charged onn the computer because the mother board is damaged.
31
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8answers
5k views

How can a CMOS battery store data?

How does a CMOS battery store information on it? I know it stores information such as the time, date, passwords and drive configuration, but how? How can a battery store data?
0
votes
4answers
3k views

Should my HP Pavilion dv6000 operate w/o battery pack while using electrical plug-in? Mine won't

While using my computer, it shut down, and I cannot get it to turn back on. I have tried removing the battery to see if the computer would work without it, but it did not. The light is on where the ...
0
votes
3answers
2k views

Battery won't charge on new Asus laptop (ubuntu)

Hi I bought a brand new Asus Q550L notebook from Bestbuy the other day and I removed Windows 8 from it and replaced it with Ubuntu. Now the battery won't charge. It is sitting at 45% capacity, if I ...
0
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0answers
27 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
votes
1answer
16 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 ...
0
votes
1answer
37 views

Is my laptop's battery dangerous?

I've been using a battery in my laptop for 3 years and I've kept it in fairly good condition until now. My routine was to keep it plugged in most of the time but use it on battery once or twice a week ...
0
votes
1answer
2k views

Battery shows 100% charged but netbook does not work without AC adapter

How can I test if the battery is connected internally to my netbook or if it is working? Is it possible that the battery has been disabled by a software setting? The battery shows 100% charged, but ...
0
votes
1answer
1k views

Is it normal for a battery to discharge when the computer is off?

My wife has a Toshiba Satellite M500 laptop. It's running Win8 off of a fresh install from the DVD. I've set it to hibernate fairly aggressively in an attempt to conserve standby battery life, but ...
15
votes
6answers
2k views

Does more RAM usage cause more battery usage?

I'm using a 2 year old 15" AMD laptop running Windows 8, and its battery life is not as long as the brand new ultrabooks for sure. In the place I'm currently working I don't have access to a power ...
0
votes
0answers
18 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 ...
0
votes
0answers
11 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 ...
-1
votes
1answer
19 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 ...
0
votes
0answers
26 views

ubuntu laptop powers off without warning very soon after on battery

Problem: I have a laptop. It works very well on AC power, but on battery power, it powers off in a few minutes, if not seconds, without warning. I saw lots of similar problems not only from SU, but ...
1
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0answers
34 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 ...
1
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2answers
2k views

Partially Charge Acer Laptop to Increase battery life

I own an Acer Aspire 5755G on Windows 7 x64 and I recently read that keeping your battery charged at 100% the whole time degrades battery life. The problem is, I always keep it in my laptop but ...
-1
votes
5answers
11k views

Keep the battery from charging fully (without Lenovo power manager)

Is there any tool (for Windows 7) to set a threshold for when the laptop battery should stop charging? I could use the Lenovo Power Manager, however I actually prefer Windows' native power management ...
0
votes
2answers
168 views

Laptop has black screen and fans on when on battery power

When trying to turn on my laptop using just the battery, the lights and fans run, but the screen and all other operations do not work. When the power cord is plugged in, the laptop works fine. It ...
0
votes
0answers
2k 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 ...
1
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4answers
5k views

How long does CMOS battery (3V) on a motherboard last?

Just wondering usually how long does CMOS battery last on a regular motherboard? I read that motherboard leakage current of about 3 - 6 micro ampere. I did a calculation below but I believe that i ...
0
votes
1answer
25 views

How to control charging cycle on Windows? [closed]

I was wondering if there was an application that would manage charging cycles of my notebook. I mean it would discharge from 100% do like 10% and then start charging to 100%. It would be good for my ...
2
votes
6answers
3k views

Laptop screen turns off on removing power cord

After a recent upgrade to Windows 8.1 Pro from W8, my laptop's (an ASUS X54H) screen turns off as soon as you remove the power cord. It turns back on with no issues when you plug the power back in. ...
0
votes
0answers
23 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.
0
votes
1answer
24 views

What's the longest expected service life for PC laptop batteries

Have there been studies on which manufacturer's battery lasts better for the long term? I'm thinking of a comparison like they do with hard drive wear-and-tear. I'm not after who could give me the ...
5
votes
3answers
2k views

Is it possible to test an UPS battery without having the UPS nearby?

I just started with a new company and they have a stack of replacement batteries for UPS's located at the branch offices. The problem is, no one knows if these batteries are good or not, and the ...
0
votes
1answer
15 views

What are the other compatible batteries for acer travelmale P253-M? [closed]

I've a acer travelmate (ntebook) P253-M, whose battery I'm trying to replace. My question is: is there any other batteries that could be used instead of the exact model? For example, do I have to use ...
-1
votes
1answer
26 views

Dead battery in brand new acer travel mate, have the warranty, how to repair? [closed]

Couple of days back I bought a brand new acer travel mate 253-M from amazon.de, but the battery is not being charged at all, seems the battery is dead. I'm not located in Germany, but I have the ...
1
vote
1answer
68 views

Battery indicator can't refresh battery state

I have a samsung np550p5c series laptop. I'm running a win7-ubuntu dual boot which I've recently set up. And my small problem is as follows: The battery indicators in both OSs seem to be unaware of ...
2
votes
2answers
172 views

Why battery indicator doesn't behave linearly with amount of time remaining on windows 7

Just out of curiosity, I wanted to know why does battery indicator is not linearly related with the amount of time i.e. If we see the screenshot which was taken at 4.55 PM , it said battery percentage ...
1
vote
0answers
11 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 ...
0
votes
0answers
95 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 ...
3
votes
1answer
314 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? ...
4
votes
4answers
5k views

Buying replacement Macbook Pro Battery - Genuine vs. eBay

I'm looking to replace my Macbook Pro's battery (15", last model before the Unibody). It's currently at 55% capacity (as reported in System Information and Battery Health Monitor). I've reset the ...
0
votes
1answer
385 views

MacBook says to replace battery. Should I?

My MacBook says that battery is not charging, and the battery is completely empty (in fact, pressing the button on the battery illuminates no LEDs). If I plug the power adapter off the mac shuts off ...
1
vote
0answers
54 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 ...
0
votes
1answer
43 views

Battery recharge functionality broken due to short in AC adapter?

I have a problem recharging the battery of my netbook, an ASUS Eee PC 1025C. Since last week the LED of the AC adapter doesn't light up when it is connected to the wall. The netbook won't turn on ...
1
vote
4answers
63 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.
0
votes
0answers
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
votes
1answer
13 views

Acer TravelMate 253M, battery not being charged

I bought a new Acer TravelMate notebook 253M today. When the charger is connected with the laptop, it is on, or I can switch it on, but it always shows the battery is empty or cannot find the battery. ...