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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93 views

Replace SSD without unplugging laptop battery

Is it normally safe to replace a laptop SSD without unplugging the battery? I wish to replace the SSD on my Samsung NP900XCE, which required me to remove the entire back panel. So far so good, but ...
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1answer
66 views

Cuda toolkit draining battery windows 10

I installed CUDA toolkit 7.5 from NVIDIA (for Parallel programming course). But from the very next day, I've observed drastic change in the power consumption. Earlier the battery used to last for ...
-2
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1answer
61 views

How to keep and restore OS state when electricity was goes off?

I am using laptop and want to not lose my operating system running state when electricity was goes off. Of course this question can be solved by using a laptop battery or external power supply (such ...
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0answers
22 views

Windows 10 Stand-By Energy drain

I have updated my Laptop to Windows 10 1 or 2 month ago, and ever since I updated the Laptop, it isn't going into Stand-By-Mode anymore when I just close the Laptop. So when I was still using Windows ...
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1answer
75 views

Is mAh a universal rating?

When looking at laptop specs, I noticed that some laptops (such as mine) have a battery measurement of around 4500mAh at 10.7v. Now, I've got a power bank that's 13000mAh at 3.7v. I have several ...
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1answer
82 views

Battery drops down suddenly

I have purchased a LENOVO YOGA 300 recently. The battery discharges from 95% to 45 % normally and suddenly jumps to 7%. Pl suggest. Its just 2 month old Laptop.
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2answers
54 views

Laptop dedicated GPU - performace drop / variable performance

Laptop GPUs (dedicated and integrated) are driving me crazy ever since I got this computer. I've searched thousands of forums and potential solutions and I couldn't find anything that solves my ...
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1answer
42 views

Laptop CMOS battery implications

My 4 year old Dell Inspiron 15R's CMOS battery is running out (has run out ?). I know this because when I turn the laptop on it keeps on giving me 5 beeps till Windows loads. I am sure replacing the ...
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0answers
475 views

How can I update bios without battery in ASUS?

I want to update BIOS to new version. While the update process executes, was given an error. The error is : the battery must be charged above 20%... Notebook is ASUS X54C with Windows 7 Home Premium ...
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2answers
35 views

Unplugged battery, now screen won't turn on.

I have posted previously on this site about my battery no longer charging after leaving in hot car for an hour or two - it would turn on only when connected but not charge. I just now took off the the ...
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votes
1answer
131 views

Will an external battery power bank power an mini-ITX board (~200W)?

I was planning to build a laptop from scratch, and I've found some good DC-DC converters that allow you to use an external power source to power a standard desktop board (in this case a mini-ITX). The ...
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3answers
122 views

Will I damage the laptop if I always use a travel adapter to charge it? [closed]

This scenario could happen if I bought a laptop in one country but later moved to live in another country with a different power standard. Will it be safe to just add a travel adapter on the plug and ...
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0answers
135 views

Change charge_full_design value in Arch

I recently installed Arch and noticed that acpi was reporting the incorrect battery capacity value, here is the output: acpi -i Battery 0: Charging, 87%, 00:14:12 until charged Battery 0: design ...
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1answer
27 views

Gateway laptop NV57H77u suddenly died [closed]

My Gateway laptop NV57H77u suddenly died while I had my iPhone plugged into the USB to charge it’s battery. I had the laptop plugged into AC power during this time. After a very short period of time ...
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0answers
61 views

laptop is plugged in but not charging (xps|m1330)

I have a Dell laptop XPS M1330, I purchased battery one year ago ,and it's duration is 1 hour approximately, yesterday when I plugged in cord to my laptop charging light is not glow and in taskbar ...
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0answers
15 views

Toshiba satellite M840 water spilled [duplicate]

Water spilled on my laptop keyboard.. after I dried it and left it for the next day... The laptop now run normally with battery... But it is never charge the battery and it is not working without ...
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2answers
80 views

Charger of less output ampere than device?

I know the cases where the cable has more output amperes, here and here, but I am interested in if you can use cables with less output amperes with the devices. I have an universal charger Vivanco ...
2
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2answers
249 views

Is it ok that my asus k501lb will be plugged in always? [duplicate]

I have my asus k501lb laptop and it seems that the laptop's battery is non-removable, what is the disadvantage of this laptop battery? Is it good or not?... it seems that the new laptop now are none ...
3
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0answers
36 views

Laptop adds harsh noise to sound playback while running on battery

I've looked at what others have said to those who asked with similar problems, and it seems to be a power supply issue. The louder the sound I'm trying to listen to is, or the higher the volume, the ...
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0answers
98 views

How can I split an internal USB header into power and data?

I've recently built a new media centre/server, one of the features I wanted from this build was to be able to power on the system via a remote. I ended up purchasing an IR blaster that can be plugged ...
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1answer
374 views

Does changing the screen resolution affect power consumption?

If I have two identical monitors and have set one to display in high resolution and the other to display in low resolution will there be any difference in power consumption? Note that this question ...
4
votes
3answers
454 views

Do same size screens with different PPIs affect battery differently?

I was trying to find out if screens with different resolutions have different effects on the battery life. Around the net, I see a common answer as no to the question: "Will changing screen resolution ...
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votes
1answer
62 views

Laptop shuts down randomly

Model: HP Pavillion 15-e010au I had a water damage accident about a year ago. Milk spill. Since then i have left the laptop in the closet for a year. Now when i turn on the laptop: Battery power: ...
2
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1answer
1k views

How to recover corrupted MacBook Pro SMC Firmware

I have a MacBook Pro Retina 15" that is no longer bootable due to (as far as I can tell) corrupted SMC firmware. The reason I think this is that SMC resets no longer work, the MagSafe charging light ...
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0answers
51 views

Luminous UPS turns off automatically when system left idle

I have Luminous UPS. When my UPS is on battery mode and system is idle it automatically turns off my computer. I have made sure it’s not due to low battery because when I start the UPS again it works ...
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1answer
40 views

How to tell whether my device has gone in to suspend

I've recently been given a new work laptop and have installed Fedora 22 on it, when I have suspended it recently it has woken up and I'm pretty sure the battery has drained massively while it should ...
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0answers
29 views

Prevent Windows 8 from booting when battery is low

Is there anyway to prevent Windows from booting when the battery is below a certain point (say 20%)? The reason I ask is that my current computer doesn't have any way to check the battery when it's ...
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1answer
41 views

Is there a way to make sure that my laptop doesn't exit sleep-mode?

I often have the following problem: I pack up my laptop, but forget to unplug/turn-off my mouse before doing the packing. Then soon after, I'll move the mouse.. causing my sleeping PC to wake up ...
1
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1answer
106 views

HP Stream 11" Intel Celeron 2GB RAM32GB SDD Laptop updated and is hung on shutting down. Ctrl alt del does nothing and can't find battery to remove

HP Stream 11" Intel Celeron 2GB RAM32GB SDD Laptop. When shutting down it gave options to update and shut down or sleep, so I updated. I closed the lid, when I opened it 12 hours later the screen was ...
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2answers
56 views

Laptop battery lasts significantly shorter than it should

A few days ago I bought a refurbished ThinkPad x201i with the following specs. i3 processor 250GB hard drive, 7200rpm 2GB RAM Runs Ubuntu 12.04 with xfce. Screen brightness set to around 50% most ...
2
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1answer
40 views

How do I find what is making my laptop hibernate at low battery?

This seems like an obvious question but it's more convoluted than it appears. At 7.5% my laptop goes into hibernate (which is about 40 minutes of power left). I have changed all the power plans to 1%...
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1answer
85 views

Is it possible to use a UPS or power inverter in place of a dying battery in a laptop?

My battery is dying and I can’t buy the a new battery because its not available in my country (India). My battery model is A41-X550E (ASUS). And it’s inside my laptop like this: So that’s why I ...
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1answer
1k views

How can I get a laptop's Windows 10 taskbar to show the battery level?

I've done searches with various permutations of battery life, power level, etc., and all the web content I've been able to see so far has been information on how to use power plans and other decisions ...
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1answer
120 views

My Samsung 700Z won't startup

My samsung 700Z will not start. It won't show the that the battery is charging and I can hold the power button but it won't do anything. I shut my computer down when it was updating because it was on ...
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0answers
34 views

Laptop battery indicator goes off and on simultaneously

I have recently updated my Windows 7 to Windows 10. And already I have been facing a weird problem. The battery indicator says "Battery not Found" and after sometime its just normal. And sometimes the ...
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0answers
17 views

Can I use a 130V AC adapter for my european laptop? [duplicate]

I have an old Dell XPS Studio 16 whose AC adapter broke a while ago. I've been using a universal adapter, but apparently Dell has some hardware checks hard coded that won't let the adapter charge the ...
4
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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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2answers
49 views

Laptop battery uptime monitor

Is there any way to measure what sort of uptime/active usage I get out of a given battery charge; that is, how long do I get actually using the laptop between full charges. I'd like it to be a ...
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0answers
110 views

Android Nexus 7 app battery usage percentages add up to over 100% of battery consumed

Simply put, the menu says that I've use 72% of my battery for screen and 42% for Wifi, among other things. This doesn't even include OS, which is at 48%. What is happening?? I'm running 5.1.1
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1answer
118 views

How can I add power plans to the battery notification area in Windows 10?

In previous versions of Windows it was possible to choose a power plan by left-clicking the battery icon and selecting the relevant power plan. As far as i can tell in Windows 10, this is not ...
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1answer
53 views

Strange battery behavior (not discharging)

Lately my laptop got this problem. Right after i unplug it (with full charge battery) it says that the duration remaining is about 30 minutes. Then, after few seconds, it drops from 100% to 90/96% ...
0
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1answer
88 views

Trying to understand the difference between various batteries for Lenovo Thinkpad T520

There are various types of batteries for the laptop and I'm not sure which one is best. The one I have right now (which came with it), is not enough to last me through my back-to-back classes, so I am ...
7
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6answers
17k views

Easy way to switch power plan in Windows 10

I've a 27" external monitor connected to my laptop and I use my laptop's screen as secondary. I've both screens turned on while I'm working. When I'm watching movies, I just keep my external monitor ...
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0answers
291 views

Fujitsu lifebook s752 BIOS password removal

I am trying to remove the BIOS password on a Fujitsu lifebook s752. Trying to remove it by getting a master password and using dogberts algorythms is impossible as it gives me back a 24 digit hash, ...
0
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1answer
27 views

Should I replace the AC charger as well when buying a new battery? [closed]

My notebook is already 4 years old, and it's battery basically died from one day to another (one day it could support the notebook for an hour, the next day I could get at most 2-3 minutes out of it). ...
0
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1answer
56 views

Laptop Charger Short Damage

today while I was plugging in my laptop charger a really unfortunate incident happened. The laptop side plug fell down and made contact with the wall jack as I was plugging it in causing a short. It ...
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2answers
36 views

Macs CPU temperature increases massively when charger is removed

So I was trying to kill a Java process the other day. I opened htop and looked for Java. This was the first time I really used htop so I figured I would set it up in a way I would like. I added the ...
3
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1answer
411 views

Lenovo X1 Carbon suddenly slows when AC is attached

To avoid anyone losing time reading this all, the solution that worked twice is: Restore your PC using "System Restore" to a point in time prior to when you started experiencing this problem Today ...
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1answer
39 views

How to find what processes are eating up battery?

I have a new Surface 3 (a little over a month old) and in the past few weeks I have noticed that the battery drains very quickly and does not charge when I am using it if it is plugged in. After ...
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1answer
38 views

Why are my computer graphics better on battery?

When I was playing games, I noticed lag spikes, but only when my computer was plugged in. I tried configuring all the power options available, but I was not successful. I know it was the graphics that ...