Edit - Super User

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Rev

1

Assuming same manufacturer like in the question, the third option will happen.
– Magus
Commented May 4, 2009 at 20:49
1

Certainly for dell laptops and power supplies the third option will obtain. I have no idea how this is accomplished.
– Christopher Edwards
Commented May 5, 2009 at 1:00
1

Dell power supplies have some sort of communications protocol they use to inform the laptop of their capabilities. If you poke around in the BIOS you may even be able to find readouts of its capabilities.
– bdonlan
Commented May 5, 2009 at 6:38
1

If the power brick is made for the series of laptop it's plugged into, higher AMPs in the powerbrick is just fine. Lower APMs in the power brick will result in something not working correctly (running laptop, charging battery, or both). It it's not the correct power brick, it'll do nothing (or maybe a warning will pop up). If it's completely different (different voltage for instance) you could do damage to both.
– Chris S
Commented Oct 25, 2010 at 14:56
1

If the supply can't provide enough power, it may overheat, or the voltage may sag. If the voltage sags, the machine may just charge slowly, or it may crash, or it may stress the internal voltage regulators. I'm not sure whether that last case is likely or what would happen.
– poolie
Commented May 26, 2013 at 23:53

| Show 1 more comment

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

formatting help »
answering help »