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Laptop AC adapters - does a higher output matter?

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hellzfyre21's Avatar
Junior Member with 2 posts.
 
Join Date: Jun 2009
28-Jun-2009, 09:13 AM #1
Laptop AC adapters - does a higher output matter?
Hi, I'm about to purchase a new AC adapter for my laptop, and I found one that I think is the one I need - same part number and compatible with my model.
The only difference is that it has a higher output than my current AC Adapter.
I don't know if its a silly question or not, but will it still be able to charge the battery? :|
I'm not that great with this sort of thing, and I really just want to be sure that what I'm buying is right before I fork over 60 bucks.
So yeah, will an AC adapter with a higher output than the original still be able to charge the battery?
Any and all help is appreciated.

Thanks guys, and sorry if anything about where I've posted is wrong.
It's my first. >_<

Edit:
The specs for my current one are:
Voltage: 100V-240V (Input), 18.5V (Output), 3.5A (Output Current)
Power:65W
Input Frequency:50 ~ 60Hz

And the specs for the one I might buy are:
Voltage: 100V-240V (Input), 19V (Output), 4.74A (Output Current)
Power:90W
Input Frequency:50 ~ 60Hz

Those are the only specs that are different, from what I've seen.

Last edited by hellzfyre21; 28-Jun-2009 at 09:28 AM..
etaf's Avatar
Computer Specs
Moderator with 34,394 posts.
 
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Location: Surrey, UK
Experience: Intermediate
28-Jun-2009, 09:21 AM #2
depends on what the higher output is referring to

if its watts or VA then that wont matter
But if its a different voltage it will matter

POST The spec

for example an ac adapter of
5v 1a
will provide 5v and upto 1amp to the laptop
5v 10a
will provide 5v and upto 10amp to the laptop

now since the first one worked and therefore the laptop used less than 1amp when you put the 10amp one it will still use less than one amp - but you have paid for a device that is spec up and caple of deliverign a lot more (usually that means a lot more momey)

now if you have
5V 1a
and the output of the new one is
20v 1a
that will be a probelm because the machine is expecting to see 5v but it will see 20v and probably break
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hellzfyre21's Avatar
Junior Member with 2 posts.
 
Join Date: Jun 2009
28-Jun-2009, 09:29 AM #3
Alright, done. D:
JohnWill's Avatar
Computer Specs
Distinguished Member with 110,212 posts.
 
Join Date: Oct 2002
Location: South Eastern PA, USA
Experience: Advanced age & experience
28-Jun-2009, 12:05 PM #4
Higher current is not an issue, higher voltage IS.
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Tags
ac adapter, charge, higher, laptop, output

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