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250 Posts

04-18-2010

USA

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  • Message 1 of 17

P50 power supply

2016-07-12, 10:43 AM

Can I use the the P50 with a smaller, 65W power supply?

 

I currently own a W530 and that will not work.

 

Thanks,

Michael

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116 Posts

04-05-2010

United States of America

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  • Message 2 of 17

Re: P50 power supply

2016-07-12, 14:41 PM

I am also interested to find out if there are any power supply options for the P50.  The one supplied (180W?) is huge and heavy.  The heaviest I've ever had.  Mostly I will be on workstation docks (if they ever arrive) but lugging that adapter around for portable use will be a bear!

 

 


. . . . . Zeke . . . . . X1 Carbon G6 - Win10 (current), P50 - Win10 (2 yrs), T510 - Win7 (previous 6 yrs)
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5224 Posts

02-22-2010

United States of America

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  • Message 3 of 17

Re: P50 power supply

2016-07-12, 21:32 PM

This depends on your definition of "use with" ;)

 

I think the system will allow a P50 to boot with the 65W adapter attached.  You'll see an error message show up, but I think you can acknowledge and bypass that error message to get the system to boot.

 

But if you intend to use the P50 with the 65W adapter attached, you could easily find that not only might there not be enough power from the adapter to charge the P50 battery, but you might find that the current load is such that the system will drain the battery over time even with the 65W adapter attached.  

 

Unfortunately, a larger/denser power adapter is one of the drawbacks that comes with using a mobile workstation like the P50.




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116 Posts

04-05-2010

United States of America

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  • Message 4 of 17

Re: P50 power supply

2016-07-12, 22:48 PM

Thanks from me (not OP).  I was hoping there was a somewhat smaller one as that has been the case with some others.  For my T510, there was a "travel" adapter that was nice and thin and still compatible.

 

Certainly something I can live with when traveling.  I don't need to carry it from home to work everyday.

 

 


. . . . . Zeke . . . . . X1 Carbon G6 - Win10 (current), P50 - Win10 (2 yrs), T510 - Win7 (previous 6 yrs)
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79 Posts

01-11-2010

United States of America

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  • Message 5 of 17

Re: P50 power supply

2016-07-12, 23:55 PM

Will a 65w PS charge the P50 when powered off?

P50 20ENCTO1WW | 6700HQ | 32 GB RAM |M1000M |512 SSD
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5224 Posts

02-22-2010

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  • Message 6 of 17

Re: P50 power supply

2016-07-13, 21:03 PM

As far as I know, as long as the system load while off is less than the output of the external power supply, the system should charge (yes, system load while off is likely > 0).    It's not going to charge as quickly as the standard power supply would though.  For reference, I believe the 65W supply is 2.25A output @20V while the standard 170W supply is 8.5A output @20V.




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79 Posts

01-11-2010

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  • Message 7 of 17

Re: P50 power supply

2016-07-13, 21:57 PM
Thanks, I'll test
P50 20ENCTO1WW | 6700HQ | 32 GB RAM |M1000M |512 SSD
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79 Posts

01-11-2010

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  • Message 8 of 17

Re: P50 power supply

2016-07-19, 12:37 PM

I tried the 90 watt and it seems to keep the P50 charged under light load. Also seems to charge OK during sleep and power off. A warning message about the wrong adapter appears at bootup, but I just ignored it.

P50 20ENCTO1WW | 6700HQ | 32 GB RAM |M1000M |512 SSD
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47 Posts

01-18-2016

Germany

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  • Message 9 of 17

Re: P50 power supply

2016-07-19, 12:52 PM

I can confirm that - I use the 90w adapter as a "travel companion" for charging while in sleep mode or powered off.

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337 Posts

11-13-2010

United States of America

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  • Message 10 of 17

Re: P50 power supply

2016-07-19, 17:17 PM

wrote:

far as I know, as long as the system load while off is less than the output of the external power supply, the system should charge (yes, system load while off is likely > 0).    It's not going to charge as quickly as the standard power supply would though.  For reference, I believe the 65W supply is 2.25A output @20V while the standard 170W supply is 8.5A output @20V.


@There is a small error that the current should be 3.25A for 65W adaptors. For 90W adaptor, it should be 4.5A @20V. I guess a 135W (6.75A @20V) will work for light usage as well. The charger interface should be a rectangular one. Anyone has a proper/working model number for the 90/135W adaptor? And how lighter is the 90/135W one compared with the 170W standard one? I'd consider the 90W adaptor as a travel companion if it is significant lighter :)

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TPs own: X31 (2003), X61T, X200T, Tablet 2, P50 (2016); Win XP-10, Ubuntu8.04-16.04.
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