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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3answers
414 views

Can I charge my nexus 4 with a USB port meant for pendrive in my car using an FM transmitter accessory(it has a USB port for pendrive) [closed]

My point is Nexus 4 needs 2.2 Amp for charging properly however the unrated USB port on FM transmitter will not be providing that much current as it is meant for a pen drive. When I connect it to my ...
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3answers
1k views

Toshiba A100 laptop battery wont charge wont run on ac power for more than few minutes..then shut down

my Toshiba A100 laptop battery seems to charge when not switched on but pretty much as soon as windows loads it then shows battery dropped down to 7%, then 3% then just shut downs...it then "charges" ...
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1answer
175 views

Can the battery in a Samsung 500T Tablet PC be replaced?

Can the battery in a Samsung 500T Tablet PC can be replaced by a user?
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3answers
123 views

Achieving fast boot, encryption, and battery health on a Mac portable [closed]

My current computer is getting old and I'm going to switch to a Mac when I replace it. I'm looking for a setup that has these properties: Turns on as quickly as possible I still have a usable ...
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0answers
69 views

Mac OS: is there a way to manage battery charge programmatically?

This question is a duplicate of question on stack overflow http://stackoverflow.com/questions/19168214/mac-os-is-there-a-way-to-turn-off-battery-charging-programmatically I'm curious about is there a ...
1
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1answer
317 views

VAIO Pro battery level not updating while using

Recently, a strange thing happens to my Sony VAIO Pro 13. When I use the laptop on battery, the battery level just won't change at all as if it's on AC adapter. Always 100%. Then suddenly, the battery ...
0
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1answer
82 views

unplug the laptop battery when the laptop is working [duplicate]

I usually plug the charger to my laptop, whiles my battery is plugged in. After a while, when my battery became fully charged I remove it from laptop, while the laptop is still working. Now I want ...
0
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1answer
59 views

HP Mini battery malfunctioning

I have an HP Mini 210-1170NR netbook, which has been working fine for the most part for about 2-3 years. today I returned to find it powered off instead of sleeping, and when turned on it says that ...
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0answers
49 views

Ubuntu sleeps after disconnecting power

I've Lenovo S400 laptop, dual boot with windows 7 and ubuntu 13.04. The problem is that whenever I disconnect the power adapter, ubuntu shows that that battery level is critically low and goes to ...
1
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2answers
407 views

HP laptop running Windows 7 shuts down when the power cable is removed

I changed the battery within the last two months on my HP laptop running Windows 7. It shows fully charged, but when the power cable is removed, it dies immediately.
1
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1answer
769 views

Dell Latitude D620 turns off when power connected

I've got an odd problem with a Dell Lattitude 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 ...
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0answers
125 views

Solid State Battery vs Lithium (ion or polymer) Battery

Background: It's a hardware related question. I was suppose where should I ask this question, after reading http://meta.stackexchange.com/questions/57998/hardware-questions-and-stack-exchange I am ...
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0answers
85 views

Line Interactive UPS battery maintenance

I am going to buy a Line Interactive UPS (around 600VA/360W with one 12V/7AH Lead Acid battery - probably PowerWalker VI 650 LCD, or Cyberpower Value 600ELCD, or any other...) for my PC needs, and ...
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0answers
85 views

newly replaced laptop battery seemingly discharges

I am also referring here to Laptop battery holds charge, but won't charge any more. I may have the same problem but I am not sure, maybe DaBaer could answer me? The battery is a replacement ...
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0answers
296 views

Asus k50ij won't start, power problems

I am trying to fix an Asus L50ij laptop. Symptoms: lost all battery, wouldn’t turn on on power cable. My first guess was the power jack, because the transformer was good. I opened it up but the ...
6
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4answers
1k views

How to display battery discharge rate in watts, Windows 8 + perfmon

Windows 'perfmon' utility allows to display graphs for different counters. One of them is Battery -> "Discharge rate" that can be spotted in the internet as a good way to examine battery discharge. I ...
1
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2answers
2k views

Notebook powers off way before battery is on a critical level

I have a notebook from Asus which is about to make its second year of life. I have absolutely no problems with full battery capacity, which is about 2 and a half hours, only 30 minutes or so less than ...
2
votes
1answer
63 views

Advice on a laptop after a battery meltdown

I have an old but highly functional Dell Inspiron 1720 that I continue to use. The laptop is ~4 years old, but the battery is an aftermarket replacement about 18 months old. Two nights ago the ...
0
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1answer
177 views

Battery Error 601 HP Pavilion dv6

The computer that i own is currently around four years old, that battery has worked perfectly up until the last year, i've been doing a LOT of research recently into why the battery is not working ...
0
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1answer
103 views

solar cells charging netbook [duplicate]

I want to see if I can charge my netbook with solar panels. With 16 smalls solar panels(they are from Westinghouse Turbo Rocket Solar Path Light with a 1.2v 150mAh a piece) the voltage and amps come ...
0
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0answers
81 views

acer 5755g battery backup sudden decrase from 3hrs charging to 1 hr…what is the cause?

Few days ago my acer 5755g have 3 hours battery backup but now my battery backup is just 1 hour lasting .i asked to some acer customer he answered me may be the last format was done with charging .now ...
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0answers
40 views

Connecting an universal battery to my wacom

I need help getting my cintiq 13hd (wacom), to connect to an universal battery. I tried a 30pin to DC plug but that restricts the power apparently and I need it to be 19v. When I talked to the ...
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4answers
189 views

CMOS Battery recharged [duplicate]

My pc was unused for several months(its a 5 year old acer desktop) and on boot up a screen came up indicating that the CMOS battery was low. Any time I restarted, as expected, the same screen came up ...
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0answers
103 views

Powering a pico-ITX board with a UPS board for long intervals

I'm putting together a project to make a DIY "Tablet PC" with readily-available products that I can put together and use with little soldering effort. I have the motherboard and a 10" touch screen ...
0
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2answers
176 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
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0answers
103 views

Does a2dp battery drain vary from bluetooth 2.1, 3.0, and 4.0?

Specifically battery life on the receiver device, not the transmitter device. Let's say I have three Bluetooth music receivers 100% identical except of three different Bluetooth versions. I play back ...
0
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0answers
239 views

Replacing 11.1v 4400mah Gateway battery with 11.1v 6600mah

I have 2 Gateway T-1620 laptop computers. When the original 11.1v 4400mah batteries went soft I replaced them with 6600mah batteries to give longer off-line use. Both laptops will charge either ...
1
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3answers
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 ...
0
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3answers
486 views

In linux, how to find whether CMOS battery is working or not?

I want to programatically determine whether CMOS battery is working or not. In my C++ program on linux I want to connect to internet and update system time if CMOS battery is not present or not ...
0
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2answers
3k views

Windows 8 custom power plan keeps resetting itself

I just got a new Haswell laptop, and was experiencing very short battery life: about 3-4 hrs with minimal use. I knew this had to be wrong, so I checked the power plan, and found that "HP Recommended" ...
1
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1answer
115 views

Battery sort of died after a power outage

So today the power went out and my laptop did a strange popping sound and turned off even though it had like 50% battery (it was plugged in at the time though). This has never happened before, it'll ...
1
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2answers
6k views

What is the function/purpose of the pinhole on the battery of a Samsung Series 5 ultrabook?

Some background (not entirely relevent to main question): I can't find my specific model of laptop online but it has all the same specs as this excluding the touchscreen: http://bit.ly/18netZQ It's a ...
2
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2answers
290 views

Do ULV Core i5 CPUs consume same power as i7 CPUs if they use same TDP?

Title says it all really: If you have a Core i5 CPU and its TDP is 17W and there is a Core i7 CPU which also has TDP 17W, will they consume the same battery power even though one runs faster? I am ...
4
votes
2answers
3k views

Lenovo Energy Management - Battery life on dual boot

For nearly two years I was running only Ubuntu on my Lenovo G570 laptop. Recently I changed to dual-boot with arrival of Windows 8.1 Preview. With that I installed some Lenovo provided applications, ...
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2answers
100 views

Why wont new hard drive use battery power?

I recently replaced the hard drive and the battery on my HP G62 laptop, Ubuntu 13.10 is installed on the drive. The machine will not boot on battery power, but works fine when plugged in. When ...
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0answers
41 views

iPod not connecting to Windows 7 PC

I have an old iPod which is not connected to my Windows 7 PC. I have iTunes in my PC but still nothing works. Actually I have't use it in last one month, yesterday I have try to ON it but battery is ...
1
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1answer
2k views

Can I charge my laptop with a charger that has different specifications?

I'm using a common charger for both of my laptops. The charger is specified at 20 Volts and 3.25 Amperes. My other laptop has a specification of 19 V and 3.42 A. Is it safe to charge my laptop with ...
1
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1answer
128 views

Playing movies from Android OS off SD/memory card

I have been doing some reading about running android OS from the BOOT menu using an SD/memory card in my laptop. For the purposes of watching movies on a long flight, for example, would loading the ...
2
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1answer
3k views

Application to only partially charge laptop battery

I was wondering if there were any software packages out there that will prevent my laptop battery from charging above a specified level. I know there are propriety options out there for Samsung and ...
1
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0answers
279 views

CPU performance monitoring and diagnosis Maximum Frequency drop

Question: what might be the reason why the maximum frequency goes down to 49%, while this is not sufficient to run existing processes? (please note if I am wrong in interpreting that CPU usage is ...
0
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0answers
71 views

laptop keyboard typing suddenly slow, connection to faulty charger?

I have a second hand Acer Aspire One ZG5 (the smallest model, I believe). When I got it, it had a broken charger, a keyboard withotu a space bar and a battery life of 20 minutes. I replaced all ...
0
votes
1answer
2k views

Are there any Linux distros that are specially made for laptops? [closed]

I have tried and tested Ubuntu, Linux Mint, Arch Linux and Windows. Recently I have come across Open SUSE. I was wondering what are some Linux distros that are specially designed for laptops. I am ...
0
votes
1answer
93 views

Switch from battery to powerpack causes strange messages and slowdown of computer

A problem that has flabbergasted me now for a while. On a Dell Latitude E6410, everything works swimmingly when the computer runs on battery. the moment that one inserts a powerpack (e.g. connects the ...
0
votes
1answer
247 views

Power use on Acer Aspire (Cannot remove battery), How to save battery life?

I own an Acer Aspire m5-581t, In which the battery cannot be removed, I use my laptop all the time for 6-7 hours everyday. Do I just keep the battery at 100% connected to the AC power or shall I ...
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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 ...
1
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1answer
300 views

Disable critical battery event

I have a battery that is a bit messed up and probably needs to be replaced. In the meantime, I would to use it without it automatically going into sleep mode. Sometimes this happens after about 20 ...
1
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0answers
43 views

Can I prevent Windows 7 from restoring my brightess setting when the power state changes?

I have a question regarding Windows 7. I have set different values for the screen brightness when on battery and when on AC power (in the power plan settings). If I manually change the brightness of ...
0
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0answers
86 views

Is an 11.1v battery safe to use in an Acer Aspire 5740 laptop?

I have an Acer Aspire 5740-6378 that has a FAILING 10.8V 4400mAHr 48WHr battery. The three websites that were "rated as reputable," all show the same voltage of 11.1v as a replacement. My manual ...
0
votes
2answers
3k 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
4answers
1k views

Why is my BIOS power-on password not resetting even though my CMOS battery has been out for over an hour?

I have an old HP xw8400 workstation. I didn't remember the power-on password I had set for it. So I unplugged the computer, took out the CMOS battery, and left it out for over an hour. But the ...