Advantages of a 130W vs 90W ac adapter?

Posted by David on Super User See other posts from Super User or by David
Published on 2012-09-19T20:12:09Z Indexed on 2012/09/19 21:40 UTC
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laptop

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power-supply

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battery

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lenovo

I purchased a Lenovo T420S laptop with a 90W/20V AC adapter P/N 42t4426 through my IT department. Subsequently, I ordered a replacement adapter and received a 135W/20V AC adapter P/N 45N0054.

The 135W version is about twice as big and heavy as the 90W version.

Is there an advantage to the 135W version like faster battery recharging?
Are there any negative effects (other than weight), like reduced battery life?

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