can I interchange laptop power supplies ?

Question

I have 2 laptops, each requiring 19 volts DC, centre pin on connecting plug is + in both cases. One supply is rated at 3.42 A, the other is 4.22 A. Is there any foreseeable damage that might occur if I interchange them....is it true that the laptop will simply claim the current it requires from the supply, so additional Amps will not be a problem (or vice versa in the case of underpowering) ? The reason I'm doing this is that one laptop is silent with regard to radiated RF noise and hash, whereas the other is plagued by it, when I connect an external soundcard. Thank you for advice, Ray

Brendan Gillatt · Accepted Answer

The laptop will _draw_ the numer of amps it needs from its power supply.The only danger is if the replacement power supply is rated to a _lower_number of amps than the original - the laptop will draw too much powerfrom it and may overheat.I would think it would be okay to use the bigger supply if it fits =]- --Brendan Gillattbrendan {at} brendangillatt {dot} co {dot} uk Key:

AJ · Answer

As posted, the larger current available will not be an issue, however going the other direction; using a supply with lower than required current, will present problems both in the ability to properly charge the laptop's battery and also may not allow the computer to function [properly]. Best recommended is to use the supply that was originally designed for the laptop."Brendan Gillatt"  wrote in message news:

can I interchange laptop power supplies ?

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