Laptop AC Adapter

[risk_reversal]

Looking to replace an AC adapter to a laptop and have a (hopefully) quick question to ask.

The current adapter is rated 15V 5A. I was reading a while back that I could use a higher rated Amperage unit provided the voltage was the same ie the laptop would only draw the power it requires.

However, after much searching I found post from users who said that using a higher amperage unit was / could be detrimental to battery life eg shortening it.

Was just wondering if anyone could shed any further light on this.

For total clarity the sticker on the base of the laptop itself states 15V 5A.

Many thanks for any info provided.

Cheers

[mjc]

I don't see how it would affect the battery life...

It's not like that laptop is ever going to use all 75 W that the current one puts out to charge the battery...

[FTT]

I have a smaller car-DC PSU for my older laptop. I used to use it with a cable connected GPS unit w-a-y before it was in vogue.

A GPS has what, a 3" screen? My setup had an 11.4" :cool: :cool: :cool:

[risk_reversal]

mjc said:
I don't see how it would affect the battery life...


As I said ran across a couple of thread on some forum and I couldn't understand it either but I thought I would ask, just in case.

Many thanks

[risk_reversal]

Here are the two threads btw

http://superuser.com/questions/247312/laptop-power-supplies-do-amps-matter

and last post in the thread below referring to the location of the current regulator

http://www.computing.net/answers/hardware/amp-output-laptop-acdc-adapters/42788.html

Cheers