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How to choose a power supply for T440p

T430 and later, plus T530 and later series specific matters only
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colorfast
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Joined: Wed Jul 01, 2020 9:31 am
Location: Aachen, Germany

How to choose a power supply for T440p

#1 Post by colorfast » Wed Jul 01, 2020 9:47 am

Hello!
A Thinkpad T440p power supply has a rectangular 3-pin connector on the output side. The inner and outer shell resemble the voltage source. The pin in the centre indicates how much current the laptop is allowed to draw from the power supply.

My Laptop came with a 20V, 4.5A, 90W power supply.
If I use a power supply rated for a higher current, will my laptop draw a higher current and charge faster?

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Re: How to choose a power supply for T440p

#2 Post by RealBlackStuff » Wed Jul 01, 2020 11:23 am

That's the nice thing about these laptops, they only draw what they need, NOT what's available.
If yours has Intel graphics only, 90W will be fine.
With discrete graphics, 135W is recommended, but with low(er) needs, 90W will do too.
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colorfast
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Joined: Wed Jul 01, 2020 9:31 am
Location: Aachen, Germany

Re: How to choose a power supply for T440p

#3 Post by colorfast » Wed Jul 01, 2020 5:59 pm

thanks, but that does not make sense to me

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