All Questions
Tagged with power-supply laptop
430
questions
238
votes
6
answers
207k
views
Should laptops remain plugged in when their battery is 100% charged?
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 ...
- 4,220
99
votes
5
answers
101k
views
Why are my games slower on battery power, even with the power plan set to High Performance?
My laptop is capable of running most games on high settings at decent frame rates. However, if the power cable gets unplugged while I'm playing, the game immediately starts slowing down, even if I'm ...
- 1,755
61
votes
11
answers
214k
views
Laptop power supplies, does current matter?
I have two laptops (same manufacture), with the same type of power connector.
However, the power supplies/transformers are slightly different.
The output on the first laptop's power supply is 15.6&...
- 1,574
26
votes
4
answers
108k
views
Laptop touchpad works incorrectly when on power supply
My original laptop adapter broke down, so I've bought a new one. It's a no-brand adapter from a Dutch internet shop.
The power of the new adapter is slightly more than the old adapter, but in my ...
- 1,196
19
votes
5
answers
54k
views
Stop Dell from throttling CPU with power adapter
My Dell laptop is experiencing the old problem of the power adapter failing to be recognized by the computer. I know for a fact it is just a break in the data cable in the line, because if I position ...
- 698
19
votes
3
answers
74k
views
What is typical power consumption of 2.5" laptop external hard drive connected to USB socket?
What is the approximate power and current consumption of a 2.5" laptop external Hard Drive 7200RPM SATA (300Gb), connected to a laptop USB port as an external hard drive?
I've heard that using a ...
- 409
15
votes
3
answers
18k
views
Notebook's Battery is not calibrated. Operates at 0% for an hour
My problem is that even if the battery percentage is 0 the notebook can stay on around an hour.
I have disabled "critical battery action" on my operating systems to use more time my notebook.
The ...
- 251
14
votes
5
answers
16k
views
Ungrounded laptop (Macbook Pro) buzzes in headphones, weird feeling when fingers brush lightly
I've got a nearly 3-year-old MacBook Pro 15" 2.16GHz (MacBookPro2,2). When I am not using the extended, grounded adapter for the power supply, just using the simple, two-prong plug, I can hear a ...
- 1,026
13
votes
11
answers
16k
views
Will leaving the laptop power brick connected to the power socket be dangerous?
My co-workers (who worked with the company longer than I have) loves to remove their laptop's power cord when they need to move around the office.
I frown on this practice since they usually don't ...
- 777
12
votes
3
answers
96k
views
Laptop battery: is voltage really important to respect?
I got an Acer Aspire 5100 and I just bought a new battery (after the stock battery just died yesterday). But I saw something after buying and I'm wondering whether it's really important or not.
My ...
- 1,713
12
votes
9
answers
49k
views
How can I cool down a laptop power supply?
Yes, that's right. A laptop power supply.
This afternoon I was playing Minecraft on my ASUS laptop. As many Minecraft players know the game is written in Java which, on high settings, can force quite ...
- 6,706
12
votes
6
answers
39k
views
Can you plug-in the battery while laptop is on AC only?
I'm using my laptop at home with battery removed and only connected to the AC power. However I'm lacking the mobility as my power cord is kinda short. Is it safe from electrical point of view to plug ...
- 1,709
11
votes
2
answers
9k
views
What happens when laptops reach 100% charge?
I have been reading alot of mixed views on how Lithium Ion batteries work when it comes to laptops. I have the new dell xps 15, with an intel i7 cpu, 16gb ram, and a 512gb ssd.
Is it bad for the ...
- 329
11
votes
1
answer
99k
views
How to judge if a laptop charger noise is a safe "hum" or a dangerous "crackle"?
I've read existing questions and answers on noises coming from laptop chargers (e.g. https://superuser.com/a/104860/112639 and https://superuser.com/a/832501/112639 and have learnt that there are two ...
- 5,396
11
votes
3
answers
28k
views
Does a laptop computer charge faster when off?
A laptop power supply can supply a limited amount of power. Conceivably, then, when the computer is running, some of the power must be diverted to the processor and other components, leaving less to ...
- 7,753