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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235 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
826 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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1answer
174 views

my laptop is not charging when switched on

I have an satellite l735-11f laptop and i have been facing a problem where the laptop battery does not charge even when power cable is plugged in. I have noticed though that i am able to charge my ...
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5answers
107 views

new laptop battery usage [duplicate]

I have a new hp laptop 4cell battery I am confused about using battery and charging it I have read it is not suitable to keep it pluged in all the time but where I live it has power fluctuation ...
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1answer
638 views

Keyboard and touchpad stopped working after battery drain in Samsung notebook

I was watching a video on my Samsung 400B4B notebook running Ubuntu 14.04 when it went to sleep because of low battery level. I plugged the AC power, resumed from the sleep but now the keyboard and ...
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1answer
92 views

SSD Causing Battery To Die Almost Instantly?

I'm a little stumped a what the problem is. I recently got a used a laptop and I swapped out the 500GB 5400RPM hard drive for a PNY 120GB SSD drive. When I unplug the power from the laptop, the ...
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1answer
915 views

Battery reports it's fine, but notebook won't boot /wo AC plugged in

I am running Acer Aspire Timeline Ultra M5-581TG. I opened it up to clean (as I've done twice before), assembled it back and now observe weird behaviour: the laptop won't react to the power button ...
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1answer
1k views

Dell Venue 8 Pro: why is the battery designed to charge up to 87%

I noticed that my Dell Venue 8 Pro (Windows 8.1) battery does not charge more than 87%. So I uninstalled the ACPI-compliant control method. It reinstalled automatically on reboot. The charge was now ...
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1answer
165 views

Is it possible to show a warning when laptop battery gets down to 20% remaining battery life? [duplicate]

I have a Dell laptop running Windows 7. When running on battery power, an alert pops up when the battery goes below 7% remaining battery life. Within 5 minutes of hitting 7% it goes into sleep mode. I ...
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1answer
2k views

All indicators start blinking when I plug in my Lenovo laptop

I have a Lenovo S400. Recently, this weird behavior started. When I plug it in, all the indicators, power LED, charging LED (blinks red) and power button start blinking together. It seems like a ...
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2answers
97 views

Battery showing 100% charged with ''Consider changing your battery''

Is it normal to have a laptop have the warning ''Consider changing your battery'' but whilst also showing 100% charged. I've got the red cross on the charge symbol showing with Windows 7 on my Acer ...
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3answers
165 views

Ask for date on boot (challenge)

Issue An old laptop computer with XP loses date every time it boots. It has no more battery pack so it has to be plugged permanently in to wall. What I already tried Replaced the little button ...
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3answers
8k 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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1answer
3k views

Laptop battery - 100% available but says charging

My laptop charger suddenly went off while connected to the laptop, I tried to reproduce and noticed that the battery is 100% full and Windows says it is still charging. Why does Windows keep charging ...
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0answers
336 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
132 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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1answer
35 views

tablet + wired network + recharging

Can any tablet simultaneously recharge and use a non-wireless network? The goal is like an always-on kiosk-like touchscreen, in a location that forbids wifi. Ethernet (not Internet) would be e.g. ...
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1answer
82 views

what happened to laptop if it suddenly die without the battery and it is due to power failure, [closed]

I do remove the battery every time I used it for long hour, is this bad and it can damage the hardware and it if can damage hardware what hardware it is. Can also give me advice what should I do in ...
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1answer
318 views

What are the negative effects of a flat CMOS battery?

Recently I have noticed that my computer has been starting up with the time and date incorrect. Given that my motherboard is about 7 years old I'm guessing that the CMOS battery is flat (or close to ...
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0answers
19 views

adapter with 19.5 v - 3.33 A.. compare my original adapter +19 v - 4.74 A.. is it okay for using it? will it harm my laptop? [duplicate]

my current adapter with 19.5 v - 3.33 A.. compare my original adapter +19 v - 4.74 A.. is it okay for using it? will it harm my laptop? please help me with your great information. thanks
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2answers
213 views

Laptop battery will not hold charge after spillage

I had a spillage on my laptop (white wine if you're interested). Thankfully the laptop seems to have survived however the battery no longer holds a charge. What makes this unique (from searching ...
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0answers
106 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 ...
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1answer
55 views

Benchmark performance 30% speedup in mains over battery operation?

This observation arose as I was evaluating the running time efficiency of various implementations of a prime sieve algorithm. The surprise was finding that differences between the best algorithms was ...
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1answer
161 views

Laptop suddenly gets turned off at charging 45%

Mine is acer aspire S7-392-9890 model ultrabook and It is very new. I just received it yesterday! I am totally happy with it except the charging. It really put me in shock when it first turned off ...
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2answers
2k views

How can I make my Samsung Series 9 laptop charge the battery to 100%?

I use a Samsung Series 9 laptop running Windows 7. I notice that when I connect my laptop to its charger, it charges the battery up to 80% and stops there. I believe this is to extend long-term ...
0
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1answer
419 views

Why Windows 8 is giving low battery warning sometimes at 7%, sometimes at 10%?

My Windows 8.0 behaves inconsistently with low battery warnings. Sometimes I receive it at 7% of battery, sometimes at 10%. I thought it depends of current power plan, but settings of ALL plans are ...
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2answers
386 views

Can using a under powered laptop charger make my notebook shut down under heavy load?

I have a XMG P501 gaming laptop based on Clevo P150HM models at the moment connected to an under powered laptop charger. It is shutting down when under heavy load (3dmark, some games in particular) ...
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1answer
56 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 ...
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0answers
40 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 ...
6
votes
2answers
475 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 ...
4
votes
1answer
1k 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 ...
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0answers
282 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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2answers
627 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.
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0answers
743 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 ...
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1answer
93 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
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1answer
55 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 ...
17
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6answers
5k 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
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1answer
165 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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votes
1answer
108 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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1answer
675 views

Ubuntu laptop powers off without warning very soon 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 ...
2
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0answers
1k 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 ...
0
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1answer
72 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 ...
0
votes
0answers
45 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
45 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 ...
0
votes
1answer
85 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
80 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 ...
2
votes
2answers
428 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 ...
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0answers
16 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 ...
1
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0answers
123 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
567 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 ...