Using a 170w Power Supply for other ThinkPads????

[Fixed_Rider]

Fellow ThinkPadders,

I have a question as it pertains to power supplies.

I now have a work issued W520 that requires a 170w power supply.
I also have in my fleet a T420, T61, X61 and a X61s. I typically just keep a 90w PS out to charge whichever laptop I am using.
Is it safe for me to use the 170w PS on the other laptop models listed?

Thanks for the input on this.

[RealBlackStuff]

Yes, as long as the output voltage is the same (i.e. 20VDC).
But what I don't know is, if the power management software on T61 and X61 notices that there is a 170W charger, instead of the 65W and 90W it is 'used' to, and says as much when you check that software.
It won't have any adverse effects though.

[Fixed_Rider]

Thanks RBS.
I'll check things out tonight, I appreciate the info.

[QWERTY Andreas]

A friend of mine used my 135W adapter of my W510 to charge her X131.. It worked, and the laptop charged very quickly

[lead_org]

170 watts adapter is not compatible with any other thinkpads other than the W520 and W530 quad core i7 models.

[RealBlackStuff]

It has output: DC 20V 8.5A 170W
The output voltage is identical, the DC jack is identical, the adapter's DC connector is identical, why would it not work?
You don't 'overload' a laptop by using a larger than standard/required AC adapter!
The circuit will just take what it needs.

Same as using the 12V battery from an 18-wheeler to start up your FIAT 500.