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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37 views

Do power fluctuations affect laptops while charging? [duplicate]

I use my laptop for overnight downloads and there has just been a problem with our society/apartment generator due to which a new generator is being used which I think causes fluctuations. Does a ...
0
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1answer
30 views

Dell XPS 17 laptop shuts down unexpectedly when running on battery power

I have a Dell XPS 17 (L702X) and the problem is that whenever I use the laptop on battery without it connected to AC it will only work for a random amount of time before it will suddenly shut down. ...
-3
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2answers
34 views

Why laptop battery so small and UPS bigger and heavier but can only hold lesser powering duration?

My friend asked this earlier today, facts that most: laptop battery are smaller laptop battery are lighter in weight laptop battery can give more time without plugging to power outlet laptop power ...
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2answers
30 views

Is it fine to run a dc motor through USB cable connected to my laptop?

I have a dc motor which needs more than 10V to run efficiently, so instead of running it on electric cells, I usually run it using my laptop's power. I connect a USB cable to my laptop and the other ...
0
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0answers
5 views

Figure out why the “System” process on Android is using a lot of CPU [migrated]

I have a Samsung Galaxy S5 with Android Lollipop. My phone was feeling sluggish. Using an app called "OS Monitor", I see that the "System" process (not to be confused with "Android System") is using ...
1
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1answer
43 views

Script - Lenovo Battery Recall

Problem: LenovoBattery.exe fails when called via batch file. Is there a way to make it work? Details: Lenovo has expanded its voluntary recall of notebook batteries. They request the industry to run ...
0
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3answers
60 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 ...
1
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0answers
22 views

How can I set a 80% battery charge limit for a HP Ultrabook? [duplicate]

I really hope you can answer this simply request. Nowadays is pretty common to have a new Ultrabook, laptop or notebook for general purposes. A very important feature is to have a healthy battery. ...
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0answers
11 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 ...
2
votes
1answer
41 views

Can low voltage damage laptop or it's battery?

Sometimes I get very low voltage in my house. I am worried if I connect my laptop charger to the socket, will it damage the charger, battery or the laptop itself?
22
votes
3answers
9k views

Why do PCs still require a CMOS battery?

Why do PCs still require a CMOS battery, given that they're already plugged in? We are providing lots of power to the PC by plugging it into AC mains electricity, so why does it still require a CMOS ...
1
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1answer
40 views

DELL XPS Bios update to resolve battery issues

The battery on my DELL XPS (edit: @ author insert model) does not charge. A BIOS update should resolve the battery issues, but when I try to run the bios update file downloaded from dell support, it ...
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2answers
27 views

Random shutdown on aspire 4935G

(on AC(with battery plugged) or AC only) the laptop just random shutdown without any notice when.. -left idle for some time -but this problem don't happen when the cpu busy like playing games,or ...
15
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4answers
2k views

Do recommended battery charging practices for a laptop apply to an ultrabook (with non-removable battery)?

For normal laptops, everyone said that if you want to use your laptop for a long period of time at home, its better if you detach the battery and just connect it directly to power. I followed this ...
0
votes
3answers
156 views

Why is my Acer Aspire E15 running slower when plugged in than on battery?

I am working on an Acer Aspire E15 (ES1-511-C590) running Windows 8.1 X64 with all the latest patches. It is running significantly slower while plugged in than when running off battery. Yes, this is ...
1
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1answer
20 views

Task Scheduler differentiate between AC and battery power in Win 7?

Is there a way to differentiate between AC and battery power on a laptop to be used in Win 7 Task Scheduler?
1
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1answer
75 views

Alternative to Lenovo “Conservation Mode”

I have a Lenovo Y50-70, which I am doing a clean install of Win8.1 on (A new SSD) The Battery software that comes with it out of the box contains a very useful battery conservation mode. This stops ...
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votes
0answers
32 views

Laptop not charging when running OS/BIOS, charges when off

I am facing this problem in my laptop since last 3 days or so. Make : HP Envy Touchsmart 15 (Core i7, 4700MQ), approx 1.5 years old. The problem is that whenever I am running any OS (Win/Ubuntu), ...
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1answer
48 views

PC restarts on power outtage despite having a UPS

Unfortunately where I live I do not have 24/7 electricity. My new PC rig which is considered to be a high-end(gaming) system is connected to a brand new APS/UPS that have these specs: DC-AC ...
2
votes
0answers
39 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 ...
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0answers
31 views

Logitech Anywhere Mouse - even new batteries show 'need to replace' red blinking light

I have a Logitech Anywhere mouse that I've had for a while now. It's been doing great but since it last gave the orange/red blinking light showing that the battery needs to be replaced, no battery is ...
0
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1answer
67 views

Run time difference between a 4-cell (43 Wh) battery and an 8-cell (58 Wh) battery?

Is there a significant improvement in battery run time going from a 4-cell (43 Wh) battery to an 8-cell (58 Wh) battery? How much longer will it run (percentage-wise)?
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0answers
31 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 ...
0
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0answers
36 views

Lightweight linux preboot environment?

I was wondering if there was any way to setup a light, low resource linux environment that'll have basic features like a web browser but can boot into a full linux distro or Windows if I need a more ...
1
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2answers
68 views

Brand new laptop, two years in storage, will the battery be ok?

I have an opportunity to buy a brand new (sealed box) EliteBook 8470p laptop for a good price. The date of manufacture goes back to around March 2013, which is bang on two years ago. Given that it's ...
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0answers
51 views

windows 8 tablet battery died while recording video, the file is lost

I was recording a video with a Windows 8 tablet and after 2 hours the battery died. When I got back home and charged the tablet, the video was not there. There are other videos in the camera roll ...
1
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1answer
63 views

Why does laptop's battery drain only when I am playing Minecraft?

I got a new power supply/cord for my Asus N550JV-CN191H, after my old one tore. The new one works fine, and the power indicator (Ubuntu 14.04) shows that the battery is charging, except when I play ...
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1answer
165 views

Is there any way disable the internal “power bridge” battery on a Lenovo Thinkpad T450s laptop via software/system settings?

I have a Lenovo Thinkpad T450s running Windows 8.1 Pro and I have to disable the internal battery on my laptop temporarily for troubleshooting purposes. I just want to keep the external battery and ...
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0answers
36 views

Laptop Noise From Internal Battery Section [closed]

(Not entirely sure that this is due to the internal battery, but that's my guess.) I have a brand new Thinkpad T450s and it has both internal and external battery. I have noticed that when my laptop ...
0
votes
1answer
29 views

Laptop turned off without charged

I have a Asus N55SF laptop, and always when I unplug my device from the charger it immediately shuts down - the battery decreases from 100% to 1% in few seconds. Perhaps the problem is with my i7 ...
0
votes
1answer
23 views

Novatech nSpire laptop randomly shuts down

I was browsing the internet and my Novatech nSpire (not sure the exact model since I am unable to get into it but I think it's N1593) and it shut down, with no warning (didn't cut out, it was a soft ...
0
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1answer
31 views

Jumpy and erratic touchpad

A couple of weeks ago my laptop's (HP Envy TouchSmart 14-k110nr) touch pad started being a little jumpy. I thought it was probably because of dirt and wiped it with an alcohol-free cleaner, but it ...
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0answers
22 views

Access HDD just on demand

Id like to know if there is some option to access hdd just on demand. I have SSD + HDD combo in my laptop and im mainly using just the ssd drive. When im plugged in electricity I dont really care as ...
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votes
2answers
70 views

How can I maximize laptop battery service life [duplicate]

My laptop is ASUS K 551 LB, which has an internal battery. Would the battery's service life be longer leaving the laptop plugged in whenever possible, or running off the battery to regularly run down ...
0
votes
1answer
49 views

Non physical hardware switch

My laptop comes equipped with a hardware switch on its backside that connects/disconnects the battery. When I am connected to AC for example, I can thus avoid overcharging the battery. Yesterday ...
0
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2answers
66 views

What will happen powerwise if you plug a USB-C device to another USB-C device?

If you have a USB-C phone or tablet and you plug it into a laptop with USB-C, which device gets charged? Or no charging will occur? People charge their phones through their laptops all the time, how ...
0
votes
0answers
60 views

Surface Pro 3 Dock - Blinking light, no charge

I have a Surface Pro 3 and a dock. When I attach the Surface to the dock, the indicator light blinks and will not charge the device: Steps I have taken: Ran and installed all Windows updates with ...
0
votes
0answers
39 views

Fresh SSD - High Power On Count when putting hibernate mode (Win8.1)

I've just bought a brand new Samsung SSD Evo 840 and I found that when hibernating, it increases Power On Count too much (in 1.5 months) as: As you can see Power On Count increases as crazy when ...
0
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2answers
97 views

When laptop battery on “High Performance” it stops charging the battery

I'm using an ACER Aspire 5750G and my laptop specs are: Proccessor: Intel Core i7-2630QM Display: 15,6 LED LCD Nvidia GeForce GT 540M - 1GB - CUDA Memory: 8GB HDD: 750GB SSD: 250GB Acer Nptity ...
0
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3answers
131 views

Lenovo Y50 Laptop drains battery in hibernating to 20% just 24hrs

I have a 6 months Lenovo Y Laptop and this is battery information is captured by BatteryCare The problem is after I installed a fresh Win8.1 (yeah Superfish issue), Hibernating drains battery so bad ...
1
vote
2answers
57 views

Is there a way to automatically quit two programs when battery is below certain level?

I'm setting up a new laptop with Windows 7 and I'm using Rainmeter to display system info in a sidebar (CPU, memory, GPU info etc). This needs MSI Afterburner running in the background to access GPU ...
1
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0answers
50 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 ...
1
vote
1answer
71 views

How to judge if a laptop charger noise is a safe “hum” or a dangerous “crackle”?

I've read existing questions and answers on noises coming from laptop chargers (e.g. http://superuser.com/a/104860/112639 and http://superuser.com/a/832501/112639 and have learnt that there are two ...
1
vote
1answer
98 views

Computer time and bios resets everytime I unplug from wall

I am using an Asus P5GC-MX motherboard with a 700 watt power supply and I cannot figure out why this is happening. First I tried a new good brand battery with no luck. Next I flashed my BIOS and ...
1
vote
2answers
25 views

Using a “unapproved” charger with phone. Any actual real dangers? [closed]

I have a OnePlus One. It states that I should only used approved chargers (aka the one that came with the phone). Is there any real danger with using for example an iPhone wall to usb adapter to ...
1
vote
1answer
286 views

Lenovo Ideapad z510 crashes when connected to AC power but works fine with the battery

I use a Lenovo Ideapad z510 running Windows 8 x64 and earlier today, during a snowstorm, power went out. Later, power came back and I got on my computer. As I was using it, I — idiotically — lightly ...
2
votes
1answer
103 views

HP 4530s laptop works with power cord but won't charge battery

Suddenly, two days ago my HP 4530s laptop stopped to be able to charge its battery. Since I was noting that the whole battery was dying since some weeks ago, I bought a new one. Either with the old ...
0
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0answers
23 views

Trying to show 100 splash screens for according to battery percentage

I am trying to show an empty battery with some red color at bottom(like in moto g) when the battery is discharged. I am able to show a static image for that, but if I use many images to show the ...
0
votes
1answer
44 views

Is battery mAh measured per cell?

I have an HP 15-d053cl laptop with a 14.8V, 2620mAh, 4-cell battery (although HP's website says it's 2800mAh) and I'm looking for something to add to my battery life. I've found my same battery and an ...
0
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0answers
23 views

Lenovo t400 s7 cmos

Hi my battery is dying dead and now my ac power is intermittent. It will start and run on ac and battery for a few hours but dies. It will not run on ac alone, although the power light flashes. Now ...