All Questions
Tagged with power-supply laptop
430
questions
2
votes
3
answers
9k
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 ...
2
votes
0
answers
4k
views
Force Windows 7 to think it is running on Adapter Power and not battery
Anyone know how to make a Windows 7 Laptop think it is running on AC Adapter power?
This laptop (HP G62 series) has a usable battery which holds charge but it has a not-official power adapter which I ...
- 121
2
votes
1
answer
2k
views
What adhesive should I use to secure power jack on an Acer/eMachines laptop?
I was going to use superglue, not sure how it'd handle the heat though and I'd be afraid of it getting in the jack. Two way tape seems to be a plausible solution (I've used it in automotive ...
- 156
2
votes
0
answers
2k
views
Is it ok to use a 19V, 4.74A 90W power supply for a 19V, 3.42A laptop? [duplicate]
Possible Duplicate:
Thinkpad power adapters
Can a 20V 4.51A power supply be used with a computer that requires a 19V 3.42A power supply?
I have lost my charger for a laptop that takes 3.42A at ...
- 21
2
votes
1
answer
14k
views
Brand new laptop making an electrical sizzling noise when opening programs
I just bought the Acer V17 Nitro VN7-792G-705X.
The processor is the Intel i7-6700HQ.
I noticed that when I open a program, say google chrome, you can distinctly hear a sizzling noise coming from ...
- 371
1
vote
2
answers
2k
views
Is there a limit on how much more ampers can I supply for a laptop?
My laptop uses a charger outputting 6.4A with 19V (120W). This charger was a replacement for the old one, the specs were almost completely matching (19.5V and 6.15A on the old charger), everything ...
1
vote
3
answers
1k
views
Ditch AC, Plugging a laptop into a car battery
Hopefully I'm asking the obvious; but my computer is important so I would like more opinions. According to the question Laptop battery: is voltage really important to respect? It seemed their ...
- 383
1
vote
2
answers
6k
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Is it safe to use AC power adapter of 6.7A or 4.62A instead of 3.34A
I have Dell Inspiron 5520. I have a problem with the power adapter and I want to buy new one.
I saw that my charger amperage is 3.34A (65W) but there are also adapters with 4.62A (90W) and 6.7A (130W)...
- 151
1
vote
3
answers
8k
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How to extend the DC part of my laptop power cable without experiencing voltage problems?
I use my laptop for extended periods on the mains in two different rooms of the house, and for ease of use I keep a separate power cable in each room. In one of the rooms I need to extend this cable.
...
user559994
1
vote
2
answers
811
views
What is an effective laptop charging scheme [duplicate]
Possible Duplicate:
Should laptops remain plugged in when their battery is 100% charged?
My friend told me that if you leave the AC adaptor plug plugged into the laptop after the battery is ...
Lagrangian
1
vote
2
answers
2k
views
Will my new laptop AC power adapter work with my laptop, given these specs?
My laptop's AC adapter went out last night and I bought a replacement today, but will not be able to test it until tonight or tomorrow.
My laptop is a Gateway P7801-U, but unfortunately Gateway does ...
- 3,149
1
vote
2
answers
2k
views
Laptop not starting up after cleaning cpu fan
I have Acer Aspire 5745G Laptop its fan started making noise. So i followed up this tutorial. And cleaned Fan and put everything back up.
But now when connecting battery automatically starts up ...
- 385
1
vote
1
answer
1k
views
Are laptop power adapters Interoperable?
Let's consider two AC power adapters from different brands (e.g. one from HP and another from Dell), with identical electrical specifications (voltage, power) and of course with similar plugs. Would ...
- 121
1
vote
1
answer
2k
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 ...
- 567
1
vote
2
answers
12k
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 802....
- 113
1
vote
1
answer
7k
views
Can a laptop power adapter bought with a UK power cord be used with a US power cord?
I bought a Lenovo laptop here in the UK and am shipping it off to my girlfriend in the US. Can she use a standard US power lead for the lead that goes from the laptop power adapter to the wall outlet ...
- 127
1
vote
2
answers
3k
views
Melting Laptop Power Supply Tip
Several (6-7) months ago, my laptop power supply cord got a cut in it and stopped working. Having gotten cheap (and short) power supplies in the past, I decided to buy 2 brand new ones from the ...
- 278
1
vote
3
answers
340
views
Battery hiding A/C input? Laptop on battery either not charging OR runs on power without battery (tp x230)
I have an eld Thinkpad x230 running linux/windows dual boot as a kitchen computer and it has been working fine for a good while. Sometimes I take it with me as a small computer and battery would hold ...
- 1,948
1
vote
2
answers
4k
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Would using a laptop battery with 0.2 V difference hurt my laptop?
A similar question has been asked before but it doesn't answer my specific problem.
I got the HP Star Wars Special Edition Laptop (HP Pavilion series) when they were promoting The Force Awakens about ...
- 13
1
vote
1
answer
387
views
Laptop Power Supply Modification
I have an old laptop which I no longer have the charger for. I ordered a new charger for the same laptop series, but the plug is too large, and it is unlikely that I will find the same adapter (Acer ...
- 1,613
1
vote
1
answer
3k
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Laptop without battery resets BIOS when ac adaptor is removed
I am using a dell inspiron 15 3537. Here's the thing:
If I remove the battery and try to power on, I get a constant beeping sound with screen showing nothing. After that I power it off clicking the ...
- 122
1
vote
2
answers
211
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 ...
- 11
1
vote
2
answers
219
views
Does the battery last longer if you unplug it when on power? [duplicate]
Possible Duplicate:
Is it better to use a laptop on battery or on AC power?
Is this true (For Dell laptops) ?
- 999
1
vote
1
answer
3k
views
Have a 40W power supply - will it power a laptop that needs 65W? (18.5v 3.5A (=65W))
Have a 40W power supply - will it power a laptop that needs 65W?
I know that the basic calculation, voltage x amps = required wattage, so 18.5v x 3.5A =65W
I realise that it should only draw the ...
- 13
1
vote
1
answer
686
views
What Steps To Take To Reduce Chances Of BIOS Update Failure With Laptop?
I need to update BIOS but i am affraid of failure which will render laptop useless and only sending motherboard to manufacturer for BIOS replacement chip can solve the problem.
Should i run laptop on ...
- 5,894
1
vote
3
answers
5k
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 ...
- 11
1
vote
1
answer
101
views
Disable Windows Effects when on Battery
Is there a program that will do the following things automatically when my laptop is on battery power?:
Turn theme into Windows Classic
Set battery option to "power saver"
Disable all animations and ...
user5828
1
vote
2
answers
372
views
Laptop's power cable specs
I've got two cables that connect a laptop to the electric wall socket.
The original that came with the laptop is bigger and the sticker with the specs says it outputs 19v - 4.74A.
The second smaller ...
- 3,469
1
vote
2
answers
8k
views
Is it safe to use 70% isopropyl alcohol on electrical contacts on any device with a battery as long as it's powered off?
I'm talking about USB ports and charging ports for laptops and phones. I want to use a cotton swab or a microfiber cloth dampened with alcohol to clean the inside. Compressed air won't do it.
They're ...
- 121
1
vote
1
answer
1k
views
Can i use 19.5V 4.62A charger for a 19V 2A laptop? [duplicate]
I have an old netbook that requires 19V and 2A charger. I found one charger of 19.5V and 4.62A in the garage. I connected it and it is working. Is it ok to use it like that or will it cause damage in ...
1
vote
1
answer
3k
views
How can I know if my laptop is getting enough power?
I have removed my laptop’s battery because it was swelling up and damaging other components of the laptop.
I am running my laptop directly through power adapter. I have connected my power adapter in a ...
1
vote
1
answer
4k
views
External monitor on Lenovo ThinkPad laptop blacks out randomly
The symptoms: the monitor blanks (turns black) for about half a second before reverting at seemingly random intervals.
The setup: a Lenovo Thinkpad T series, with a default 65W AC adapter power ...
- 7,363
1
vote
2
answers
846
views
HP Elitebook laptop fails to switch from mains to battery when AC power is lost
I have acquired two (identical) used HP laptop power supplies compatible with and for two identical HP branded laptops in an office. When power is cut to the supply, the attached computer immediately ...
- 708
1
vote
2
answers
2k
views
Can a laptop tell if a charger is non-OEM?
A few days ago, my Dell Inspiron 15 7558 started throttling down to 0.48GHz while plugged in. The only way to get the i5-5200U performing back around its native 2.2GHz is to unplug the charging cable ...
- 227
1
vote
1
answer
1k
views
Could overvolting the USB port on a laptop cause battery drain issues?
So yesterday I was working on a project with an Arduino Mega. The Arduino was being powered with a 9V battery plugged into the 5v and GND pins on the board. I needed to make some changes to the code, ...
- 111
1
vote
1
answer
129
views
Do voltage params of a laptop AC adapter and battery treated differently?
I'm considering buying replacement for my laptop AC adapter and battery. I've gone through a number of related discussion in internet, and got somewhat confused that a battery voltage may vary but AC ...
- 183
1
vote
1
answer
1k
views
Should I re-charge battery when it has 90% of juice remaining?
I always keep my charger plugged-in and my battery remains fully charged.
but sometimes when I restart my laptop it starts charging again and shows the battery is in it's 90's%. My question is should ...
- 23
1
vote
1
answer
2k
views
Squealing coming from laptop power supply? [duplicate]
I have an HP Pavilion dv7-6135dx. This morning, the power supply/AC adapter started making squealing noises for a few seconds at a time.
I had it plugged in during a storm that happened while I was ...
- 443
1
vote
1
answer
4k
views
System keeps changing power mode while gaming
Recently my laptop keeps changing power mode while gaming, like if i disconnected the charger physically.
I don't have another charger to test, this is the stock one which has been running fine for 3 ...
- 330
1
vote
3
answers
32k
views
Dell AC adaptor flickering green light and won't charge laptop
I have a Dell Latitude E6400 and recently the charger blinks the green LED and wont charge the laptop. After a while however the laptop charges, and then this may occur again after a couple of hours, ...
- 13
1
vote
2
answers
964
views
Ran power through a USB port- am I out of luck?
I'd like to preface this by saying I'm an idiot.
Long story short, I stuck my Acer Aspire V's power cable into one of its USB ports and the computer unceremoniously died. Plugging it in shows no ...
- 111
1
vote
1
answer
1k
views
Laptop won't boot without power cable connected
My laptop is an Acer Aspire 5750 that used to run Windows 7 but is now dual-booted with Ubuntu 12.04 (now my predominant OS). Recently an annoying bug developed in that my laptop won't boot without ...
- 11
1
vote
2
answers
3k
views
What consumes laptop battery when it is turned off?
My Toshiba laptop consumes battery while it is off. At night I usually turn it off and unplug the power supply.
I noticed that when I turn it on again the battery is no longer full but around 90%. ...
- 2,490
1
vote
1
answer
321
views
Using Power Supply with less ampere for Laptop [duplicate]
Possible Duplicate:
Laptop power supplies, does current matter?
My laptop Charger is 19.0v and 6.5A, it was broke yesterday. I tried to find a replacement, but couldn't so I got another one with ...
- 111
1
vote
2
answers
448
views
Can I use a cheap inverter for my laptop?
I'm going to travel in a car this summer. It would be very nice if I could charge my laptop using the cigarette lighter.
Because my computer is from Apple, there's no way to directly connect the two, ...
- 1,277
1
vote
4
answers
7k
views
HP Zbook G3 Mobile workstation not turning on after
I am having a HP Zbook G3 Mobile workstation, i was working with that and forgot to plugin it in to charge, the laptop eventually turned off when it was out of battery, after that laptop is not ...
- 111
1
vote
3
answers
2k
views
Laptop charges intermittently
My Lenovo Z-series 51-70 laptop doesn't charge the battery all the time (sometimes it does, sometimes it does not). After long periods of leaving it unplugged and turning the laptop completely off, it ...
- 111
1
vote
1
answer
6k
views
Is it dangerous to charge a laptop via an external charger and a docking station?
If this is not the right place for this question, sorry and please direct me to the right place!
I have a Dell Precision 5540 laptop, which has a 130W AC Adapter.
Input = 100-240v~1.8A 50-60Hz
Output =...
- 133
1
vote
1
answer
73
views
External battery (powerbank) discharged immediatelly upon DC-IN unplug [closed]
I just bought a battery Viking Smartech II, and I have this problem. It started slowly to charge, from 1% up to 20% after an hour. I wanted to test it so I unplugged the power cable from DC-IN - and ...
- 7,509
1
vote
1
answer
8k
views
Is laptop charger polarity standardized?
Chargers are often advertised with only voltage, amps and the size of the cylindrical connector. In theory you also need to also check polarity of the pins.
I have seen many warnings of home made ...
- 2,407