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Laptop Charger


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5 replies to this topic

#1 klausfunk

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Posted 23 June 2011 - 08:53 AM

Hello.

I have a charger for an old HP Pavillion dv5000.

I want to know if I can safely use it on a Acer Aspire 5742?

As I dont have the original charger for it.

The Acer says "DC Rating 19V 3.42A"

The HP charger says "Output 18.5V 3.5A"

Thanks.

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#2 klausfunk

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Posted 23 June 2011 - 09:07 AM

Oh and the connector fits. Both bits are yellow too.

#3 strolln

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Posted 23 June 2011 - 09:42 AM

Those 2 are close enough that it should work, the slightly lower voltage of the HP charger may mean the Acer battery takes longer to charge than if you had a 19V charger. Make sure the tip polarity of the connectors are the same.
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#4 klausfunk

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Posted 23 June 2011 - 09:53 AM

Thanks for your reply.

This I what I thought...

The amps are higher so I guess the Acer wont suck too much juice and kill the charger.

How do I check the polarity?

#5 strolln

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Posted 23 June 2011 - 01:31 PM

There should be some markings saying which is + and -, most likely center is + outside - but can't guarantee. You could always use a meter on the charger itself to determine it's polarity.

Edited by strolln, 23 June 2011 - 01:31 PM.

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#6 BlackSpyder

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Posted 23 June 2011 - 07:38 PM

Not advisable, but given the bad quality of Acer charger's you're actually upgrading the charger. I'm using an HP Power brick with my Acer too.

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