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Possible Duplicate:
Charging laptop with non-original charger
Is it safe to use a power supply with a different laptop?

I've recycled a acer laptop from a friend, but original power adapter is lost.

I'm planning to use a spare dell adapter.

Laptop requirements : 19v, 4.74A Dell adapter : 19.5v, 4.62A

I will not using the battery at all, so I guess that power consumption will be a bit fewer than specified.

Is there an electrical risk ? or fire risk ?

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marked as duplicate by Ƭᴇcʜιᴇ007, Simon Sheehan, 8088, TFM, ChrisF Dec 9 '12 at 19:15

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I've seen some of them. Just wanted to be sure that more voltage IS REALLY forbidden. Guess answer is yes. – Obscur Moirage Dec 10 '12 at 9:33