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improwise
HDMI
Posts: 181
Registered: ‎06-14-2016
Location: SE
Views: 2,617
Message 1 of 4

ThinkPad 90W AC Adapter with P51

Is it possible to use the ThinkPad 90W AC Adapter with a Thinkpad P51 with Xeon 1505 and the M2200 GPU? Am a coder so I will rarely use the Nvidia GPU at all but don't want the CPU, memory, SSD etc. performance to be affected by a to small charger.

 

A related question, does the Nvidia GPU kick in automatically when using an external monitor or can that also be used with the Intel GPU? Only doing office work so no gaming, 3D modeling etc.

improwise
HDMI
Posts: 181
Registered: ‎06-14-2016
Location: SE
Views: 2,535
Message 2 of 4

Re: ThinkPad 90W AC Adapter with P51

Noone? Thought that Lenovo staff monitored these forums?

crazydogg
What's DOS?
Posts: 1
Registered: ‎02-27-2018
Location: AT
Views: 2,180
Message 3 of 4

Re: ThinkPad 90W AC Adapter with P51

I am using an old Thinkpad Power Supply (90W) from my T61 with an adapter on my P51.
It does not charge when I use the laptop, even just reading PDF's.
I did not realize a reduced battery drain.
It charges the laptop when it's powered off or in standby.
The same applies for an old 65W Power Supply.
Community SeniorMod
Community SeniorMod
Posts: 3,394
Registered: ‎12-01-2007
Location: US
Views: 2,161
Message 4 of 4

Re: ThinkPad 90W AC Adapter with P51

Hello,

 

The THinkPad P51 uses a 170W adapter, nearly twice as many watts as the ThinkPad 90W AC Adapter puts out.  It will only charge the P51 when it is powered down, or perhaps in lower power modes like deep sleep and hibernation.  I would imagine this is a safety feature to prevent the adapter from burning out.

 

Regards,

 

Aryeh Goretsky

 



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