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79 Posts

01-11-2010

United States of America

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  • Message 11 of 17

Re: P50 power supply

2016-07-19, 17:46 PM

I thought mine on Amazon - "Lenovo 20V 4.5 amp 90 Watt AC Adapter"

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

11-13-2010

United States of America

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  • Message 12 of 17

Re: P50 power supply

2016-07-19, 18:11 PM

Found a comparison:

 

90W: http://shop.lenovo.com/us/en/itemdetails/0B46994/460/FB655FA7A2834E04AED9731463CD174E

weight: 0.79bls,

 

170W: http://shop.lenovo.com/us/en/itemdetails/4X20E50574/460/1F242B5C183C4AEC90EA90C2A4722DF3#4X20E50574

weight: 1.32bls

 

Does 0.53 bls in weight make a difference? Or, possibly you have lighter solutions for a travel adapter.

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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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47 Posts

01-18-2016

Germany

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  • Message 13 of 17

Re: P50 power supply

2016-07-19, 18:34 PM

If size matters... for me the weight makes a difference. But that's very individual...

 

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3 Posts

07-19-2016

United States of America

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  • Message 14 of 17

Re: P50 power supply

2016-07-19, 22:08 PM

I don't travel with the delivered power supply, it's just too bulky.   Unfortunately I have to give up the performance lowering the screen brightness to 50%, put the machine on power saver, closing apps to keep me from draining the battery too fast.

 

The 90W I travel with charges the machine when it's off, but does little to keep the machine going.  I wish Lenovo would associate a power profile that can keep me going with a 90W power supply.

 

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3 Posts

07-19-2016

United States of America

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  • Message 15 of 17

Re: P50 power supply - use your 90 W power supply, leave the brick at home

2016-07-26, 21:56 PM

I've been using the 90W power supply on my P50 and haven't run out of juice in weeks. 

The trick is to unplug the power supply for ThinkPad to measure and adjust its wattage.

 

Here's what to do: 

* When the battery is at 100%, unplug so the battery can discharge 

* When the battery is around 70%, plug the 90W power supply and use the machine as you would 

* When the machine is on standby/powered off, plug the power supply to recharge the battery 

 

Note:  The battery will not charge but you will notice the battery will stop discharging and you will be using juice from the adapter. 

 

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337 Posts

11-13-2010

United States of America

542 Signins

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  • Posts: 337
  • Registered: ‎11-13-2010
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  • Message 16 of 17

Re: P50 power supply - use your 90 W power supply, leave the brick at home

2016-07-26, 22:01 PM

Interesting trick here! Does the 70% threshold depend on the power profile in working?

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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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3 Posts

07-19-2016

United States of America

7 Signins

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  • Message 17 of 17

Re: P50 power supply - use your 90 W power supply, leave the brick at home

2016-07-26, 22:37 PM

i2000s, 

I tested with the balanced power profile. 

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