Questions tagged [laptop]

Portable personal computer, normally with a foldable chassis

Filter by
Sorted by
Tagged with
-1
votes
1answer
1k views

What's the purpose of this bulky cylindrical part near the plug end of a laptop charger cord? [duplicate]

I want to fix my laptop charger cord, I used a multimeter to check the voltage and it gives me less than one volt. It feels very flexible near the plug, but I don't know if I can cut before or after ...
0
votes
3answers
669 views

Can I safely substitute a DC converter for the Macbook's AC adapter?

I want to go from this: to this: The converter would be this: http://smile.amazon.com/dp/B00HVCWGNE or something like it. Does this sound safe? The step up converter would be set to a specific ...
29
votes
2answers
49k views

How does a USB C port provide the power to charge laptops?

I've heard about laptops such as the new Chromebooks that are charged via a wall charger that connects to a USB-C port. I'm quite happy that this will supposedly standardize laptop chargers but I'm a ...
0
votes
1answer
136 views

Laptop shows battery is 4% charged, but it is charged to maximum [closed]

I got old acer computer and i noticed that when I plug in charger, it says it is charging, but after 5 hours it still was 4% only, so i decided to get out battery and check it with manualy using ...
1
vote
3answers
6k views

Hacking laptop power button: Turn on laptop when AC's back

I'm using one of my old laptops as a server. I'm running the laptop without battery in case of a need for a hard reset. When I need a hard reset, I want to be able make this happen with a toggle of AC ...
3
votes
2answers
237 views

How does a laptop maintain battery at full?

I know how a laptop battery becomes charged, however, I am not so sure how the power is maintained when when the battery has been charged to the maximum. I am unsure whether the laptop would switch ...
21
votes
5answers
9k views

Can FPGA out perform a multi-core PC?

I don't understand how FPGA can be used to accelerate an algorithm. Currently I'm running a time consuming real time algorithm on a quadcore laptop so that four computations can be done in parallel. ...
0
votes
1answer
4k views

Turn Laptop Battery to a Power Bank

Is it possible to turn a laptop battery into a power bank? I have seen video tutorials and articles on how to turn AA Batteries into power banks, however, no one has created a power bank using a ...
-3
votes
1answer
3k views

Headphone has no sound if fully inserted in jack [closed]

When I connect my headphone to headphone jack in my laptop, I don't hear any sound. Unless I do not fully plug it in and instead just plug it in around 50%. Sometimes I hear sound but it is all ...
-1
votes
1answer
176 views

19.5V, 5.13A power supply to replace 19.5V, 7A power supply? [duplicate]

I have this laptop: http://www.newegg.com/Product/Product.aspx?Item=N82E16834233058 It came with a pretty large and heavy power supply, so I am trying to replace it with a smaller one. The reason why ...
2
votes
2answers
4k views

18650 Li-ion cells for the laptop battery: with protection circuit or not?

My laptop battery died and I've took it apart to replace the cells inside. Do I have to buy new cells with protection circuit or without it? Googling the existing cells part number LGABC11865, I've ...

1 2 3
4