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  • Is it safe to buy a replacement laptop battery that has slightly different voltage than the original?

    - by Hugoagogo
    I'm looking for a new battery for my Acer Aspire 4741g laptop. I am trying to get a higher capacity battery. Many sites (like this one and this one) list batteries that are interchangeable with the battery that came with the laptop (AS10D41). These batteries have higher capacity, but also marginally lower voltage (11.1V vs. 11.8V). Is this a problem? Does it mean that the battery is actually incompatible? The replacement battery I am looking at is AS10G3E, and is listed in many places as being compatible with the AS10D41, but nobody makes any mention of the differing voltages. I am trying to find out what kind of problems a lower voltage battery can cause. I know P=IV; with reduced voltage, will the machine draw more current, possibly damaging components? I'm just speculating, but I'm worried about the chance that using a battery at a lower voltage will damage my laptop.

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  • Recommendations on laptops - long battery life, slim, Windows 7

    - by molecule
    Hi, I have been looking at a couple of laptops... The most important requirement is long battery life, slim & light, and runs Windows 7. One that seems to fit the bill is the Sony Vaio Z series laptops. They claim to have long battery life, have some really impressive specs (on paper) and a very nice design. They are not on sale where I am yet but has seen/used them? Second would be the Lenovo Thinkpad IBM x301 For business users, Thinkpad seems to be the way to go. I have also considered Dell Alienware M11x but may not be completely appropriate for business use? What would you recommend with a budget of USD1500-2000?

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  • How to rebuild a Li Ion laptop battery?

    - by spoulson
    I have an aging Gateway NX560XL laptop. The battery is toast and a new one, even aftermarket, starts at $130. So, to experiment, I began tearing apart the old battery to see what can be done. I found it used 8 standard size 18650 Li Ion cells arranged two cells parallel then in series (like: ====). Some online shopping revealed ~$7-13/ea replacements depending on mAh output. My plan is to load test to determine the bad cells and replace only those, as I read that typically only 1 or 2 may be bad. I'm proficient with soldering, however these cells are attached with welded tabs. Some of them broke during disassembly and I'm not sure how to reattach them. What I found online are cells like these that have solder tabs pre-welded to the ends so I can solder wires onto. Is there any guide available that provides the instructions and parts to do this kind of rebuild?

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  • I modified my registry and now my laptop doesn't report its battery or power settings

    - by Crouch
    I saved a backup of my registry and then made a change to it. After the change, the Windows 7 battery meter no longer reported how much battery power was left. I also was no longer able to change between Power Profiles in the Control Panel. I tried to restore the original registry but it didn't restore the lost power features. Now I have to keep my laptop plugged in all day because I never know how much power I have left. Anyone know what to do here?

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  • Battery in Macbook Pro 15" i5

    - by Graniti
    Hi I just purchased a new Macbook Pro (2,4GHz i5 320Gb) but the battery lasts about 5h and I was not doing anything more than browsing with WI-FI and editing text files. In the specification says that it should last 8-9 h. Does anybody have any idea if I could return the laptop with the reason that I am not satisfied? Is it enough? Anybody had any similar experience? I do not know if it matters but I bought it from a Apple Premium Reseller shop. Thanx, Granit

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  • Laptop Battery problem

    - by sudhin
    My Compaq Presario CQ42 laptop battery is not working well with Ubuntu 12.04. But there is no problem in Ubuntu 10.04. Sometimes it shows percentage, sometimes remaining time, but charge reduces suddenly if I close the lid. The battery's charge reduces as follows: 100% charged battery after two minutes shows 1hr:30min remaining then after 2 minutes time remaining is 1hr:24min after 10mins if i just close lid and opened then shows 64% remaining ..... How can I solve this problem?

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  • Ad-Driven Apps Are Sucking Your Android Battery Dry

    - by Jason Fitzpatrick
    Ads in free Android apps might be annoying but you probably never imagined they were radically draining your battery. New research from Purdue University and Microsoft highlight just how much ad-driven apps tank your battery life. What did they find? That poorly designed ad-modules in free ad-driven applications are terrible at conserving energy. In popular applications like Angry Birds and Free Chess 70% of the energy the application consumed was used to drive the ads. They also surveyed other applications and found that ad-driven apps weren’t alone in excessive battery use–the New York Times app, for example, spent 15% of its battery consumption on tracking and background tasks. Hit up the link below to read the full whitepaper for a more in depth look at the methodology and results. Fine Grained Energy Accounting on Smartphones with Eprof (PDF) [via ZDNet] Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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  • Battery charging is flickering [closed]

    - by Michael
    A few days ago my notebook started to bug around with charging the battery. When the battery is not absent notebook runs smoothly. Until I plug in the battery. Then it starts to charge but immediately stops and restarts charging and stops and so on. If the notebook is not running battery seems to charge well (LED is not blinking). And LED is not blinking intermittently. Seems to be arbitrary. Does it have something to do with that? This happens every second. [13354.078696] keyboard: can't emulate rawmode for keycode 240

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  • Laptop's battery is stuck on "estimating"?

    - by xd1936
    Hello! After installing Ubuntu 10.10, the battery indicator worked fine (both percent remaining and estimation on time). I then installed and configured some software (Skype, Pidgin, Thunderbird, removed Empathy and Evolution, ect) and the battery meter, when clicked, always says "(estimating...)" I've tried running the battery down to zero and charging it fully again. If I go into the history or details, the percentage is recorded correctly. Any ideas?

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  • Laptop battery sometimes does not charge?

    - by user1880405
    So on my Asus K56C laptop running Ubuntu 14.04 (was same problem in 13.10) I got a problem that from time to time after I use laptop without cable (just on battery) it stops charging with cable. I can still use laptop indefinitely on cable, but it's not charging. The only solution is to remove and reinsert the battery, then it will charge. Now I wonder how does laptop 'knows' that battery was reinserted, and is it possible to simulate that from Ubuntu, maybe some command which refreshes battery? P.s.: this is not happening on Windows 8.1.

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  • Laptop does not charge old or new battery with Old and New AC adapters.

    - by Jeff
    My Sager computer has been having a strange issue with the charging. For a long time it would be working perfectly as long as I was active on it. After I'd leave idle for a while it would suddenly decide it didn't want to use AC power anymore and would just discharge the battery until it shutdown because of low battery levels. Was not a huge deal to me since I just sent it to standby when done with it and it worked fine. Recently, however, it would not detect AC power while the battery was in. It ran from the battery just fine but until you powered it down, unplugged the battery, then plugged in the AC adapter it would not be on AC. In addition if I plug the battery back in after it's on AC power, it will see it but the battery won't charge though it can still discharge it. This is OS independent. I tried both a replacement battery and a replacement AC adapter. Neither solved my issue. I'm fairly comfortable opening and servicing a laptop but I don't know where to start. I'd like to avoid replacing my system board if possible. Any Ideas?

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  • Toshiba Qosmio: Battery Stuck at 60%, does not Charges, PC can't power up, can't remain on with out

    - by Fellknight
    Just like the tittle says, now let me try to give some more detail about the symptoms; The battery is stuck at 60 percent (68% at the moment of this writing).When hovering over the battery icon in Windows 7 Home Premium x64 it reads:"68% available (plugged in, charging)", there's no x or any sing the OS is displaying any error. No matter how much time left connected to the AC adapter the battery doesn't charge, it seems however it continues to discharge at its normal rate when disconnected from the laptop (about 1% each 2 weeks). Now this last symptom is the one i find most strange it "seems" the laptop somehow isn't recognizing the battery because even with the remaining charge of 60%(ish) the laptop wont power up or remain on if disconnected from its AC adapter(if it's on and is unplugged it will immediately turn off). Meaning that even with the battery attached correctly in its right place is as if running the laptop with no battery at all. Toshiba's Utilities haven't detected anything strange (or anything for that matter) with the battery or the hardware. The laptop when in use is connected 90% of the time to a Belkin surge protector (like my 1TB EHD). The protector is working correctly (green light on) and the 1TB HD too, thus a power surge having damaged it's very unlikely. Thnx in advance

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  • Buying a Laptop Battery - OEM vs. 3rd Party

    - by pygorex1
    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 worth it? What experiences have you had buying replacement batteries?

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  • Windows 7 and Battery Problem

    - by Aaron
    I have a Dell Inspiron 6400/E1505 model laptop. I've recently installed Windows 7 on my computer and now my battery is not charging ? What can I do ? Is there any one who once had the same problem and then solved it ? Thanks.

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  • Sony Vaio laptop constant "bi" noise when on battery

    - by Dominick1978
    I have sony vaio vgn fs215s laptop. When I use it with battery alone it makes a constant "bi" noise that gets louder on more power consuming tasks. Sometimes on startup the screen goes black before xp logo. Then i hear the windows startup sound but sill black screen. I bypassed the xp logo (via msconfig) and it gets me all the way ok but the noise is still there. There is no problem when the laptop is plugged to a socket. What do you think is the problem and how do i fix it (how much money)? Thanks a lot.

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  • What makes a laptop battery specific to a model?

    - by ryeguy
    I have an old Toshiba laptop (pentium 4) whose battery just crapped out. Looking at the battery, it says it's a PA3251U. Looking online, this thing is going for about $100! I don't want to spend probably 50% of this machine's value on a battery replacement! My question is: what makes a laptop battery specific to a model? Do I really only have this one battery to choose from, or can I look for any battery that matches some certain attributes (like number of cells, voltage, etc)?

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  • Cheap batteries for old laptop

    - by Jeremy French
    I have an old laptop with a kaput battery. I have looked at this question with regards to spares, but most of the sites that are linked too from there have batteries which probably cost more than the laptop is worth. I like keeping the laptop around as a spare, but find it fustrating that it has to be plugged in permanantly. It seems to be that a half good battery would be acceptable for me, for a knock down price. However nothing of the sort seems to exsist. Is there any way to get cheep batteries in such a case? Laptop is a Compaq Presario 900 if that information helps

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  • Should laptops remain plugged in when their battery is 100% charged?

    - by Click Upvote
    I've been hearing mixed responses to this, so would like to hear the final answer. When your laptop's battery is 100% charged, should you leave it plugged in so any battery power doesn't get used, or will that cause overcharging, overheating. etc? Should the laptop be unplugged when battery is 100%? I'm asking because my laptop's screen tends to get dim when unplugged, so I don't like to run it on battery. (Any fixes to this would also be helpful.)

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  • Laptop battery fails to change unless power level very low, and then dicharges quickly

    - by dana
    I've had my laptop for about 5-6 weeks. Its a DELL Alienware M15x and I have never replaced the battery,such as http://www.pcbatteria.com/dell-alienware-m15x-series.html. The past 3 weeks or so the battery can only charge when the computer is off or in a low power state. If its on and plugged in it will still lose its charge unless its already at 100%. On a full charge without being plugged in it only holds its charge for about 1 hour on "power saver". This makes it extremely hard to use it as a portable device so i'm trying to find a way to troubleshoot the problem without having to buy a new battery or laptop. Unfortunately I need it for the next few months in some of my classes so its kind of urgent. Thanks for your help!

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  • Satellite L640 Battery Applet Problem

    - by Dean
    Hayy guy i got a satellite l640 and i installed ubuntu 12.04 on it and i dont get the battery percentage ive tried a fair bit but this is my first time using linux. Ive gone into the power option and ive installed battery status apps and still i get nothing. There was one saying how much amps and what not the battery has and it all has 0.00 for everything, ive also tried the terminal cammands to see the percentage and that doesnt work. Is there anything i can do or should i just got back to windows.

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  • Giant battery consumption with dual graphics solution (only i-gpu working)

    - by Noel
    I use a Laptop with Intel Core i7 SandyBridge and integrated Intel HD3000 graphics as well as a Nvidia Geforce GTS 555M. So far, I got the impression my Laptop was running with the Nvidia graphics adapter only because the fan was always running on highest speed (and loudest noise) and it was getting very hot even when doing nothing. Also the battery is empty after ~40-50 minutes (while having ~4-5 hours with Intel graphics in Win7). Since this can't be healthy I wanted to switch to the integrated graphics instead. I was fairly surprised when the System Information showed me that the as graphics adapter I use "Intel M". Why is my battery empty so fast with Ubuntu? Without using the NVIDIA graphics adapter? Summary: I DONT WANT to use the Nvidia graphics adapter (OPTIMUS), I just want the Intel solution. As I have understood, the Intel solution is running already, emptying my battery 10x as fast as Win7. What is wrong? Any ideas?

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