English Community

ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
All Forum Topics
Options

3 Posts

03-24-2017

US

3 Signins

32 Page Views

  • Posts: 3
  • Registered: ‎03-24-2017
  • Location: US
  • Views: 32
  • Message 1 of 9

T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-03-24, 10:39 AM

Hi All,

 

I have a Lenovo T440p , the original charger is 20v 2.25a = 45W with Square pin.

 

But I want to use as second charger the following:

20V 3.25 (65W) with circle pin (from a T420) + adaptar from circle pin to square pin.

 

is possible to use a 65W charger?

 

thanks!

Solved! See the solution
Reply
Options

12818 Posts

06-06-2011

RU

17792 Signins

176915 Page Views

  • Posts: 12818
  • Registered: ‎06-06-2011
  • Location: RU
  • Views: 176915
  • Message 2 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-03-24, 11:17 AM
Hello and welcome

Yes, that'll work



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #Retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
ThinkPad Stack • 2.4/5 Wireless Router, HDD 1 TB, BT Speaker, Power Bank, Mobile Projector

Do it well, worse becomes itself

Communities:   English    Deutsche    Español    Portugues    Русскоязычное    Česká    Slovenská    Українська   Moto English

Reply
Options

3834 Posts

12-11-2015

US

4366 Signins

49242 Page Views

  • Posts: 3834
  • Registered: ‎12-11-2015
  • Location: US
  • Views: 49242
  • Message 3 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-03-24, 11:19 AM

Actually the T440p shipped with up to a 135W adapter in some configurations, but it is not the wattage you need to be concerned with, just the output voltage and amperage, which for the 65W version (FRU 45N0256) was also 20V and 3.25A, so as long as your adapter is OK, then it should work.

 

 

T440p parts list

https://download.lenovo.com/parts/ThinkPad/t440p_frubom_20160614.pdf

0 person found this solution to be helpful.

This helped me too

Reply
Options

3 Posts

03-24-2017

US

3 Signins

32 Page Views

  • Posts: 3
  • Registered: ‎03-24-2017
  • Location: US
  • Views: 32
  • Message 4 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-03-24, 12:43 PM

Thanks to both!

Reply
Options

895 Posts

06-13-2008

SE

1296 Signins

8415 Page Views

  • Posts: 895
  • Registered: ‎06-13-2008
  • Location: SE
  • Views: 8415
  • Message 5 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-10-10, 15:09 PM

There are chargers with 45, 65, 90, 110, 170 watts. Perhaps more. Have all the the same voltage/ampere so I can use any of them?

Reply
Options

8350 Posts

01-13-2008

US

77289 Signins

2193494 Page Views

  • Posts: 8350
  • Registered: ‎01-13-2008
  • Location: US
  • Views: 2193494
  • Message 6 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-10-10, 15:19 PM

wrote:

There are chargers with 45, 65, 90, 110, 170 watts. Perhaps more. Have all the the same voltage/ampere so I can use any of them?


That will depend on the laptop model.  Those are probably all 20V chargers (assuming you're asking about recent Lenovo adapters) but the current available will vary.

 

Laptops with high wattage requirements will sense a lower-capacity charger and refuse to charge.  Lower-demand models (65W for instance) may accept a 45W charger - and perhaps seem to charge or run - but may have problems with voltage sag, and/or the charger will go into over-temp or over-current shut-down.

 

In general it's not a good idea to try to charge a laptop with a lower-spec charger.

 

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

Communities: English Deutsch Español Português Русскоязычное Česká Slovenská Українська Polski Türkçe Moto English

Reply
Options

895 Posts

06-13-2008

SE

1296 Signins

8415 Page Views

  • Posts: 895
  • Registered: ‎06-13-2008
  • Location: SE
  • Views: 8415
  • Message 7 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-10-10, 15:40 PM

ok but not the opposite? higher-spec charger?

Reply
Options

8350 Posts

01-13-2008

US

77289 Signins

2193494 Page Views

  • Posts: 8350
  • Registered: ‎01-13-2008
  • Location: US
  • Views: 2193494
  • Message 8 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-10-10, 16:01 PM

wrote:

ok but not the opposite? higher-spec charger?


That should be OK.

 

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

Communities: English Deutsch Español Português Русскоязычное Česká Slovenská Українська Polski Türkçe Moto English

Reply
Options

895 Posts

06-13-2008

SE

1296 Signins

8415 Page Views

  • Posts: 895
  • Registered: ‎06-13-2008
  • Location: SE
  • Views: 8415
  • Message 9 of 9

Re: T440p with 20v 2.25a (45W) charger as original, but can I use 65w charger?

2017-10-10, 16:02 PM

thx

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete