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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1answer
16 views

Limit CPU frequency on Ubuntu Linux

I'm looking for a way to limit CPU frequency when system is running on battery. Solution doesn't have to work exclusively when using battery, it may be in form of bash commands from which I could make ...
9
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2answers
482 views

Buying a Laptop Battery - OEM vs. 3rd Party

Looking at a replacement 9-cell battery for my Dell 1525 I've noticed that the OEM batteries that Dell sells are up to 3x more expensive than batteries sold by a 3rd party vendor. Is the Dell premium ...
12
votes
2answers
19k views

Is a CMOS battery rechargeable?

Is a CMOS battery rechargeable? If so, what does its charger look like?
0
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1answer
32 views

Batteries react strangely

A school has several identical laptops bought 5 years ago: Fujistu Lifebook model A530 Since several weeks ago, around 50% of them randomly turn off after 1 to 5 minutes: The shutdown is sudden: ...
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1answer
58 views

Took laptop apart, no longer will stay on while using battery

I took my laptop apart (Acer S7 392), very carefully noting each step of disassembly, in order to replace the keyboard. Now the laptop will not sustain power unless the charger is plugged in. I ...
1
vote
1answer
22 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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1answer
361 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 ...
0
votes
1answer
86 views

Battery drains during hibernation (to disk) and even when completely shut down

I have a Thinkpad x220 (Debian Stretch) with a 6 cell battery which seems to be ok, according the the xfce4-power-manager. . The odd thing is that the battery drains during hibernation (to disk) at a ...
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4answers
2k views

Is it normal that a laptop battery drains when the laptop is off?

I have an HP ProBook 450 G2. Every time I shut down the computer and turn it back on after a day, the battery level decreases by about 5%. I'm sure that the computer is shut down, not in sleep or ...
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2answers
166 views

laptop battery drains while shutdown [duplicate]

When I shut down(not sleep or standby or hibernate) the computer the is at 80%. Next morning I tried open my laptop it didn't start without plugging the ac power because the battery level is 0%. I'm ...
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2answers
1k views

Acer Laptop is shutting off instantly when on battery

My latop (Acer M5 581-TG) is completely shutting off when on battery, sometimes before it can even attempt to boot, sometimes after 10 minutes of logging into windows. Everything is fine if it is ...
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0answers
18 views

mobile getting charge by only laptop usb port and not charging using any ac charger [closed]

strong texthi guys i am new here my mobile is android mobile i by mistake put in mirco usb charging port cables opposite and from that time mobile stop charging by ac charger i try a lot of different ...
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votes
3answers
2k views

Laptop battery charging stuck at 90%

My laptop battery charged week ago up to 100% (fully). Recently, I noticed (within this week) that it now charges only to 90%. First sign was that laptop battery led now always orange (charging) and ...
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3answers
4k 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 ...
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votes
2answers
7k views

Battery only charges when Laptop is off

My laptop only charges when it is off. If I try to charge it when it is on it says "plugged in, not charging". I just got it 3months ago and I've not changed its battery or charger. My Laptop is an Hp ...
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votes
1answer
31 views

recommended battery for 750 watt ups

I have a ups with capacity 750 Watt, please advise if i can use 175 Amp battery with 750 watt ups? otherwise please advise suitable battery capacity for 750 watt ups so it can perform good.
2
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0answers
25 views

Battery Stops Charging Randomly

I have a Lenovo E540 running Windows 10 x64. For quite a while now, I've been having problems with how the battery charges. When I plug it in, it will always start charging - maybe for only 30 ...
0
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0answers
32 views

(Windows 10 Pro) Set task scheduler to gracefully shutdown when switching to battery

Long story short, we have a requirement tossed on us to make a Surface 3 shut down upon commercial power loss. I have went through Microsoft support, and we tried several things to attempt to disable ...
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2answers
2k views

What happens when laptops reach 100% charge?

I have been reading alot of mixed views on how Lithium Ion batteries work when it comes to laptops. I have the new dell xps 15, with an intel i7 cpu, 16gb ram, and a 512gb ssd. Is it bad for the ...
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0answers
23 views

UPS battery rapid discharge when turned off (from the power button)

I notice twice now that when I turn off a UPS from the power button, its battery rapidly discharges. Today it discharged from 100% to 20% in about 30 minutes. The batteries themselves are fairly new, ...
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votes
2answers
3k views

ASUS Q502L “no battery detected” - Windows 8.1

PLEASE NOTE:: There is a fair possibility that I have found a solution to this quite some time ago, I continuously attempt to post a solution, but for some reason a moderator is persistently deleting ...
61
votes
4answers
8k views

Unplug laptop while it is running

Am I "hurting" my HP laptop by leaving it running, unplugging from outlet - walking a few feet and plugging it back in? My brother-in-law says I am.
1
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1answer
34 views

Does a worn down battery charge faster than a new battery

My laptop which is from late 2012 has a worn down battery which only lasts for 15 minutes.For some reason it charges from 15% to 100% in 1 hour of active web browsing and coding. But my Nexus 9 tablet ...
0
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0answers
9 views

Why isn't the OEM-provided (Sony) battery health monitor working?

I have a 2010 Sony Vaio Z11 (a very nice laptop, I might add) which has a 9-cell "extended" battery attached to it. When my laptop was new, 6 years ago, I got a full 7 hours out of it - which would ...
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0answers
15 views

HP Envy 17 will only charge when lid is closed

My HP Envy 17 is just out of warranty, it is running Windows 7 64bit. The unit does not charge when the lid open and laptop is on. It only charges when closed. I've read that this is a common issue ...
0
votes
1answer
50 views

Laptop Battery compatibility

My Asus K46CB laptop battery is dead. I want to change it, the battery model is "Li-ion Battery Pack A41-K56","15.0 V" , "2950mAh" , "44Wh". But when I search in the internet using the same model ...
0
votes
0answers
48 views

El Capitan won't sleep when I close the display

I just got this new macbook pro with el capitan installed, my problem is that if I just close the lid overnight on battery power, in the morning I find it with no battery at all. Here's an extract ...
0
votes
0answers
6 views

Is auto-sync really the biggest battery killer? [migrated]

I have been digging the archives for eternity to find that Location Services and Auto-sync (assuming we ignored other factors such as Bluetooth etc -- because my focus is mainly about auto sync) are ...
0
votes
1answer
31 views

Lenovo laptop, Windows 10 not charging battery

I have a Lenovo G500s. It came with Windows 8.1 pre-installed with the battery working fine. I've installed Windows 10 on the laptop now and suddenly the battery is not recognized anymore. It says "0% ...
0
votes
1answer
22 views

Prolong battery life [duplicate]

What are the general guidelines for maintaining the laptop computer battery? -Is using the laptop on battery,disconnected from outlet,better or is the opposite true? -If the computer is performing ...
0
votes
1answer
1k views

Asus Ultrabook won't turn on

I have an ASUS ZenBook UX31A with Windows 8 installed on it. I recently tried to start the laptop, and it just doesn't do anything; it won't turn on any lights, no reaction whatsoever. If I plug in ...
0
votes
1answer
80 views

Screen flashing when certain programs are focused

My laptop screen is sometime flashing when it is battery powered. While I can live with it, what puzzles me is that it flashes under certain conditions (and not always): When on battery and Firefox ...
0
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0answers
19 views

Windows 8 force battery/plugged-in icon to show in task bar

On laptop systems with a battery, Windows 8 shows either a battery icon (when running from battery) or a "plugged in" icon (when running from AC). Clicking on this icon allows changing the power ...
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votes
2answers
40 views

Windows-7 Acer Aspire 5738 laptop simply turns off

My laptop simply switches off on its own...and I mean switch off without warning or anything...as if someone cut the power supply so the computer did not show any warning etc. And this happens only ...
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vote
2answers
1k views

Battery won't charge and BSOD: DRIVER_POWER_STATE_FAILURE

I have a Dell Vostro 1510 running Windows 7. Today when I pulled my machine out of it's bag and plugged it in, the little battery light on the side blinked constantly instead of staying solid, and ...
0
votes
2answers
21 views

Laptop loses charge while plugged in

Whenever I start my laptop, if I don't close it at the Windows 8 boot logo, it would shut off. The charger light would show green but turn orange quickly then shut off. Sometimes when I get it to ...
1
vote
0answers
29 views

Computer's power consumption got really high after upgrading to Windows 10

I have an HP Envy dv7 laptop (750GB HDD, 8GB RAM, 1600x900 Display). I used to work on Windows 8.1 and the battery used to serve me for 3-4 hours even when using programs that need a lot of processing ...
0
votes
0answers
17 views

Charging issue with Dell Inspiron battery

i have a Dell Inspiron 15R with Windows 7 Ultimate installed. The charger is plugged in and showing that its charging, but it remains as it is, in a way that it is showing charging but the battery % ...
0
votes
1answer
476 views

Dell Studio laptop not compatible with charger (will turn on, not charge)

I have a Dell Studio 1558 laptop that won't turn on unless I plug in my charger. Right now I'm using a 65W Dell AC Adapter. My laptop will turn on, but give me a message saying that it is the wrong ...
0
votes
1answer
623 views

Dell XPS m1530 system cannot boot need 130w or greater

I have a Dell XPS M1530 and I lost my old AC adapter but ordered a new one. For the longest time it always had a battery charge so I was able to boot into the OS but now it is completely dead. I have ...
0
votes
1answer
49 views

charge old battery with adapter [closed]

I want to use my old hp notebook battery but I dont have the laptop and now I want to charge it... but it has 5 input, I mean a port which gets in 5 blade.... only thing that is write in it is 14.8V ...
10
votes
3answers
13k views

How does limiting a laptop battery's full charge to less than 100% extend its battery life?

My laptop lets me limit how much of the battery will charge before reaching full charge: At first, I understand what the intent is. I know that overcharging a battery will result in degradation of ...
0
votes
1answer
116 views

Ubuntu, battery is never fully charged

I installed Ubuntu 16.04 in a Lenovo thinkpad e550 and i have a problem: the battery doesn't charge, the icon on the panel doesn't indicate it's charging, and in "Power Statistics" -> "Laptop Battery" ...
0
votes
1answer
32 views

Battery is shown as fully charged but does not feed the laptop

My laptop is a young Acer V11 Touch (V3-112P-P2E7). Yesterday I used it regularly on battery mode and I left it charging overnight. This morning's surprise is that the laptop only works when connected ...
0
votes
1answer
419 views

Why does my Samsung laptop computer think it is unplugged?

Samsung laptop, purchased new in 2012. Windows 7 64-bit. 8GB RAM. Model NP300V5A. I woke up one morning and woke the laptop. I had left it plugged in to the wall the night before. When it woke, it ...
4
votes
2answers
2k views

Why is the battery dead inspite of the full charge the previous day?

My laptop is 9 months old. In which I sparsely use the battery of the laptop as I am connected to the power outlet most of the time. This problem has started since 4 days. As per this post my system ...
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votes
1answer
7k views

Using HP charger on a Dell Inspiron 15R laptop [duplicate]

My Dell Inspiron 15R 5521 charger was stolen from my University desk. I have an old (about 4-5 years old) HP charger of my previous HP laptop. The Dell laptop on the bottom says: 19.5V and 3.34A / ...
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2answers
64 views

Force laptop to use battery, not charger

I was wondering if it was possible to force a laptop running Windows to use its battery as the power source even when a charger is plugged in? If so, is it possible to switch between power sources ...
1
vote
1answer
2k views

Dell Latitude D620 turns off when power connected

I've got an odd problem with a Dell Latitude D620 laptop. If the laptop is running on battery alone then it works perfectly, however the moment you connect a power adapter to the laptop it shuts ...
1
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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 ...