All Questions
Tagged with power-supply laptop
430
questions
0
votes
2
answers
462
views
How does my HD retain state when I disconnect my laptop battery?
Title is pretty much self-explanatory. When I disconnect (take out) my laptop's battery for a few hours, then put it back in and turn my laptop on, I haven't lost any information. How is this possible?...
- 2,882
0
votes
2
answers
5k
views
Green light on my laptop adapter continues to glow for 2 to 3mins, even when it's not charging
I can see a Green light on my dell laptop adapter even when adapter is being used and connected to a power source. As per my knowledge this idicates that adapter is plugged in to power source and ...
- 31
0
votes
2
answers
4k
views
HP charger burnt?
Ok so I got a new HP laptop around a month ago and today I was watching Netflix and my battery was 10%. So I went downstairs and got my charger and when I plugged it in it wasn't working. I thought ...
- 17
0
votes
2
answers
2k
views
Using laptop during power outage
Hurricane Sandy is coming. I am worried about if there will be a power outage and how long it will last. I have an exam coming and have to study on my laptop. So how can I do to ensure I still can use ...
- 17.3k
0
votes
1
answer
4k
views
Does intensively running a gaming-laptop increase electrical costs significantly? [closed]
Our electric bill has been high lately, and I was wondering if it is related to my new gaming laptop I bought. I have an MSI GT780DX. It has a huge power brick AC charging adapter, and I leave it ...
- 3,534
0
votes
2
answers
1k
views
Using my laptop as a USB power supply
I've been using my laptop as a USB charger for my media player (usually an iPod Touch). Each night, I play an audio-book from my media player (usually iPod Touch), which needs to be charging (via USB)...
- 13.4k
0
votes
3
answers
12k
views
can laptop and its adapter be mixed and matched? [duplicate]
Possible Duplicate:
Should laptops remain plugged in when their battery is 100% charged?
charging laptop with a different manufacturer's charger
I was wondering if today's laptops and ...
- 17.3k
0
votes
2
answers
627
views
Plugging laptop, Desktop PC, Iphone etc in reverse due to 2 plug pins with same size
If you have a 2 pin laptop charger and a 2 pin wall outlet and plug in your laptop into the charger and the charger into the outlet upside down due to the 2 pins on the plug having the same dimensions ...
- 101
0
votes
1
answer
6k
views
Why does my laptop's power brick "tick" when connected to A/C while not also connected to the computer
I recently got a new 14" 2013 Razer Blade, and found that the power brick has a weird behavior.
When I plug the brick into the wall, after a few seconds, it will start to produce a "tick, tick" noise ...
- 3,268
0
votes
2
answers
435
views
Is a laptop batery some kind of uninterrupted power supply for a laptop system
I preferred using my laptop on AC{Battery Unplugged} because the System suggested that performance is better while on AC{unplugged battery} than when on DC, So i decided to remove the battery and use ...
- 261
0
votes
2
answers
200
views
Battery charging on and off, should I replace battery or AC adapter power supply?
Situation:
I have a Lenovo G40-70. Windows 10 Home. I bought it as new in 2017; I keep it running 24-7. The problems started with the battery not charging. I disconnected it for the night, leaving the ...
- 69
0
votes
1
answer
1k
views
Can laptop battery get damaged if charged from non grounded outlet?
Recently I noticed my laptop battery swelled large amounts a lot on both top and bottom. It is an internal battery and 2+ years old. I have suspicion that using a power outlet without earthing/...
- 101
0
votes
1
answer
436
views
Can my power cord w/ transformer or the 3.5 inch enclosure harm my 2,5 inch hard disk drive (HDD)?
I got two enclosures suitable for both 3.5 inch and 2.5 inch HDDs. It says on the outside they need 12 Volts and 2 ampere (2000 mA) which, imho, is the same thing.
Their power cords+transformator ...
- 535
0
votes
1
answer
849
views
Battery ran out of charge suddenly and won't charge
I've dell inspiron 5547 laptop and it was working fine till last night i used it. I didn't shut it down as I usually do and just closed the lid to let it go to hibernate or sleep mode, battery was ...
- 103
0
votes
1
answer
2k
views
Connecting USB devices to a laptop using powered USB hubs
I am trying to connect multiple peripherals to my laptop, and I want to be sure that I have enough support for all of them.
The power was my main concern, but then I realized that maybe even ...
- 473
0
votes
1
answer
564
views
Is keeping a laptop connected to power supply harmful for its battery? [duplicate]
I heard that charging a Li-Ion battery all the time is practically harmful for the battery and significantly reduces its useful capacity over time. Is this true? Should I disconnect the power cord ...
- 1,377
0
votes
1
answer
225
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 ...
- 395
0
votes
2
answers
453
views
Laptop Auto Shutdown After Power Off
I got a used laptop from someone which works like a charm when on power but as soon as I remove the power cord and let it use battery power, it goes shutdown even though the battery shows there is 95% ...
- 429
0
votes
1
answer
399
views
On a laptop are voltage input and voltage rating on a battery the same thing?
I need to replace the battery in my Samsung Notebook model #XE501C13-S02US. The label indicates input as 12V. When I shop for a battery for this model they all list a rating of 7.6V. I suspect we're ...
- 115
0
votes
2
answers
968
views
Laptop dead from overvolted usb-c
Laptop is EVGA SC17
Usb-c 3.1 (non thunderbolt)
Battery 3.7v 550mah
Ok so i stupidly was hotwiring a battery to charge via my laptops usb-c port, I know i should have used my powersupply or even a usb ...
- 11
0
votes
1
answer
120
views
How can I run a Windows 11 Lenovo laptop for the longest possible time on a portable power bank?
I have a Lenovo Ideapad3 running Windows 11 which comes with Lenovo Vantage battery conservation mode where it only charges the laptop battery to about 50 or 60% while plugged in. I do this and then ...
- 244
0
votes
1
answer
67
views
I am sure there is electricity from the power supply, but the device won't power up
For someone without an electrical engineering background, I've searched this issue online but couldn't find satisfying answers, so I'm asking it here.
I have had this issue multiple times in the past.
...
- 103
0
votes
1
answer
1k
views
Are there external batteries to replace internal laptop batteries?
My older laptop (HP Spectre XT TouchSmart) does not have a working battery and a replacement is not readily available (relatively few options in Canada), so I've been using AC power directly. This is ...
- 11
0
votes
1
answer
141
views
Laptop battery discharges quickly in OS, but not in BIOS
I have a Dell Precision 5510 laptop. I recently replaced the battery as I was having this issue, but the issue persisted with the replacement.
In the OS (originally with Win10, but then later with ...
0
votes
1
answer
2k
views
Is it safe to leave a disconnected laptop charger plugged in to its power socket?
When I'm at my desk, my laptop is always plugged in. Sometimes I take it into other rooms of the house. When I disconnect the charger from my laptop, I make sure the charger is unplugged from the ...
- 786
0
votes
3
answers
2k
views
Laptop graphic card not working when battery is taken out but connected to power supply
I am trying to keep my battery life as much as possible so I tried taking out my laptop battery when i am gaming on it at home. However, when the battery is out of the laptop and plugged in to the ...
- 101
0
votes
1
answer
3k
views
Laptop power supply trips electrics, only at home. What causes this? [closed]
So my gaming laptop is 4 years old now and ever since I got it, it has tripped the electrics in my house.
Now I'd like to remedy the issue once and for all. At the moment I am using an RCD (or GFI ...
- 1
0
votes
1
answer
4k
views
External monitor flashes occassionally only while power cord is plugged-in
I have a Thinkpad laptop (E550 to be exact) with an i5 CPU and Intel HD 5500 GPU running with Win 7. Since two weeks, while an external monitor is connected (to the VGA port) AND the power cord is ...
- 73
0
votes
1
answer
521
views
External batteries and maximum output (Multiple devices)
I'm about to buy an external battery with this output specs:
AC 230V/ 50Hz.
65Watt (max 85 Watt).
It would be similar to this one; picture below for reference:
I’m used to see amperage output, ...
0
votes
2
answers
947
views
Asus laptop doesn't turn on
My girlfriend has an Asus laptop with a battery that dosen't work, so she uses it while it's connected to the wall.
This laptop has been in use for 2 years+ I think, and today suddenly, it stoped ...
- 113
0
votes
2
answers
294
views
Using usb as power slot
I recently bought a 3tb Seagate Expansion external hard drive. I didn't know that it requires external power supply. I am worried about the fact that the hdd will get damaged if suddenly power goes ...
- 331
0
votes
1
answer
401
views
Laptop does not start anymore because of power issues
I had power issues with my laptop (HP Pavilion dv7 1040ef) for awhile (two dead accumutators, some shutdowns for no reason), but now my computer won't load anymore. I can still start it on ...
- 163
0
votes
2
answers
6k
views
Using wrong adaptor with same V but wrong amps with my laptop
I have a Toshiba Satellite A200 1-GH. My sister's old laptop was also a Toshiba. The adaptors were mixed somehow, and I've been using the wrong adaptor for a very long time. I've realized this when my ...
Merve
0
votes
1
answer
233
views
Laptop power button not working but battery discharge pinhole button is starting the computer, what might be the issue here?
I have an Acer Aspire A515-51G, the issue is suddenly the power button has stopped working, the battery is charging, but the pinhole that they have given; pressing it, actually starts the computer; ...
- 159
0
votes
1
answer
7k
views
Is it possible to ignore a docking station's power supply, if plugged in to laptop charger
I recently purchased a new docking station (Plugable ud-ultc4k) for use with my work laptop (Dell Precision 5760). The docking station is able to provide up to 100W of power, whereas my laptop can ...
0
votes
1
answer
50
views
MacBook Air doesn't power on when the battery is connected
A friend asked me to look into his MacBook Air because it didn't want to power on anymore. Took a look at it, opened it, took the battery out and connected the charger cable and it worked every single ...
- 21
0
votes
1
answer
301
views
Dell Latitude E5450 runs (Minecraft) better on battery
I have a Dell Latitude E5450 (Windows 11, Intel Core i5-5300U, Nvidia GeForce 830M, 16GB) and have noticed that in sometimes it runs better on battery than plugged in, specificly playing Minecraft (...
- 121
0
votes
1
answer
449
views
The replacement AC adapter for my Dell laptop does not charge but the old faulty one (exactly the same) does if the cord is laying just right
I'm very frustrated and perplexed as to why the old AC adapter that clearly has a short inside somewhere will still charge the battery after I wiggle and bend the cord to find just the right spot, AND ...
- 1
0
votes
2
answers
3k
views
would disabling a GPU in windows reduce a laptop's power consumption?
So let's say I have a laptop (ThinkPad P15 Gen 2) with a 230W power adapter, a 140W NVIDIA RTX A5000 Max-Q 16GB GDDR6 and an 11th Generation Intel Core i9-11950H Processor with vPro. Let's also say I'...
- 7,232
0
votes
1
answer
632
views
Can you run a laptop with a dead battery using only a power bank of appropriate size?
I have a MacBook Air (13", early 2014) with a dead battery (won't accept charge). I currently run it using the MagSafe power adapter. However, the magnetic connector is too easily disconnected ...
- 1
0
votes
2
answers
1k
views
Continuous power consumption of laptop's power brick when in plugged in, not charging mode?
Modern laptops come with the facility of being used in a plugged in mode only, without overcharging the battery. So, in such a case, the power consumption through the adapter should vary according to ...
- 111
0
votes
2
answers
794
views
Why do laptops need a higher voltage than desktops? Also, what form factor do laptops use?
Why do laptops need 19V whilst desktops need 12V? If no parts use 19V in a laptop, then what is/are the voltage(s) for the components that are typically 12V in a desktop? (e.g. fans, disks, DVD drives,...
- 31
0
votes
1
answer
2k
views
Do laptop chargers still consume electricity when the laptop is turned off (shut down) and the charger is plugged in [duplicate]
I tend to forget that I am charging my laptop when I turn it off and leave it overnight charging, even though it is turned off. I'm wondering, does it still consume electricity?
0
votes
1
answer
85
views
Can switching power settings on a laptop during an update affect the battery?
I recently had to move my laptop, and it started some planned updates as I was shutting it down. Being in a hurry, I unplugged the power cable and packed it, figuring that the laptop would just finish ...
- 101
0
votes
1
answer
4k
views
Safe to connect self-powered USB hub to a docking station?
I have a StarTech Thunderbolt 3 Dual-4K Docking Station (https://www.startech.com/en-us/cards-adapters/tb3dkdpmaw). It connects to my 2019 16" Macbook Pro via a Thunderbolt 3 host port. The ...
- 103
0
votes
2
answers
385
views
GPU being 'ejected' as soon as game launches
Issues are very similar to this and this . Note that is an external GPU setup , not a discreet laptop GPU.
I can start the laptop with the card connected and it immediately outputs through the card, ...
- 77
0
votes
1
answer
57
views
Unplugging laptop PSU from wox instead of wall socket
My laptop PSU has 2 parts, one containing the brick with the cable going to the computer and the other one a cable with a standard IEC C13 connector and the wall plug.
I was wondering if there are any ...
- 113
0
votes
2
answers
2k
views
Accidentally shorted laptop's usb with 12v external supply
I was working with Lcd Cfl inverter, which works on 12v supply. To provide a pwm signal i wanted use 5v signal which at that moment i tried to provide from my laptop, ik i was being stupid. So i was ...
0
votes
1
answer
235
views
Unplug laptop when upgrading?
Some laptop hardware upgrade/repair tutorials advise unplugging, others to keep it plugged, latter arguing it provides a continued discharge path for built-up static electricity. This reasoning makes ...
0
votes
1
answer
619
views
Is it safe to use a 19v - 3.42A adapter on a laptop that requires 19v - 6.32A? [duplicate]
The original power adapter for my Asus laptop is broken. A spare adapter I have with me has different power specifications:
Input
Original: 100-240V ~50-60hz 2.0A
Spare: 100-240V ~50-60hz 1.5A
...
