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Authentic Lenovo 90w charger? If so, for which model?

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DucatiThumper
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Authentic Lenovo 90w charger? If so, for which model?

#1 Post by DucatiThumper » Sat May 11, 2019 3:43 pm

Hello guys and gals,

New member here who is awaiting his T440p. I ordered this 90w charger, it was listed as a genuine Lenovo charger but the pictures shown in the ad were of a different model.

The packaging provided by seller showed SKU 0B46994. The label on the charger shows
Lenovo part number of 42T4430 and FRU is 42T4431. The date on it is 2012.07. It has the needed slim/rectangular tip. Has the ® after Lenovo and the portrait label.

Im thrown off the FRU is legit based on Lenovos site, it shows up on the maintenance manual of various xx20 models. But searching that FRU on various sites along with the laptop models, they all have the round tips.

What exactly do I have?

http://i.imgur.com/mswMYFX.jpg

Thank you

dr_st
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Re: Authentic Lenovo 90w charger? If so, for which model?

#2 Post by dr_st » Sun May 12, 2019 2:36 am

Welcome to the forum. :)

What you have (had) here is a pic that's way too big and stretches the page. So I removed the tags and the pic is now a link.

The part indeed seems not-genuine, since the label and FRU does not match; you are correct that this is the FRU for the round-tip model.
Thinkpad 25 (20K7), X1 Carbon (20HQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

DucatiThumper
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Re: Authentic Lenovo 90w charger? If so, for which model?

#3 Post by DucatiThumper » Sun May 12, 2019 6:03 am

dr_st wrote:
Sun May 12, 2019 2:36 am
Welcome to the forum. :)

What you have (had) here is a pic that's way too big and stretches the page. So I removed the tags and the pic is now a link.

The part indeed seems not-genuine, since the label and FRU does not match; you are correct that this is the FRU for the round-tip model.

Apologies for the super large picture. Im use to forums that automatically resize.

Doing more research it appears Lenovo started releasing slim/rectangular tip models in 2012. It didnt become standard until 2013. Via Thinkpad wiki. Is it possible this is one of those early 2012 releases? But Im not sure what part or FRU they used on slim/rectangular tips in 2012? Or which Lenovo models used them.

Thank you for the response.

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Re: Authentic Lenovo 90w charger? If so, for which model?

#4 Post by dr_st » Sun May 12, 2019 6:29 am

DucatiThumper wrote:
Sun May 12, 2019 6:03 am
Apologies for the super large picture. Im use to forums that automatically resize.
A better way is to use the automatic thumbnail generation system provided by imgur. You can look it up - it's quite easy to use by adding suffixes to the URL.


DucatiThumper wrote:
Sun May 12, 2019 6:03 am
Is it possible this is one of those early 2012 releases? But Im not sure what part or FRU they used on slim/rectangular tips in 2012? Or which Lenovo models used them.
Theoretically possible, but extremely unlikely. Lenovo does not typically reuse the same FRU for different products (if anything, sometimes similar products will have multiple FRUs).

One way to recognize a non-OEM charger is by the serial number (which starts with 11S). What's the number on yours? Does it have 20 or 22 digits? If it's 20, then it's fake for sure, cause it should be 22. Of course, if it's 22, it does not mean much, since later counterfeits where better in terms of accuracy.
Thinkpad 25 (20K7), X1 Carbon (20HQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

DucatiThumper
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Re: Authentic Lenovo 90w charger? If so, for which model?

#5 Post by DucatiThumper » Sun May 12, 2019 6:35 am

dr_st wrote:
Sun May 12, 2019 6:29 am
DucatiThumper wrote:
Sun May 12, 2019 6:03 am
Apologies for the super large picture. Im use to forums that automatically resize.
A better way is to use the automatic thumbnail generation system provided by imgur. You can look it up - it's quite easy to use by adding suffixes to the URL.


DucatiThumper wrote:
Sun May 12, 2019 6:03 am
Is it possible this is one of those early 2012 releases? But Im not sure what part or FRU they used on slim/rectangular tips in 2012? Or which Lenovo models used them.
Theoretically possible, but extremely unlikely. Lenovo does not typically reuse the same FRU for different products (if anything, sometimes similar products will have multiple FRUs).

One way to recognize a non-OEM charger is by the serial number (which starts with 11S). What's the number on yours? Does it have 20 or 22 digits? If it's 20, then it's fake for sure, cause it should be 22. Of course, if it's 22, it does not mean much, since later counterfeits where better in terms of accuracy.
Appreciate the Imgur tip.

The serial number is 11S42T4430Z1ZGWE27VC6M. 22 digits.

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Re: Authentic Lenovo 90w charger? If so, for which model?

#6 Post by DucatiThumper » Sun May 12, 2019 6:43 am

The only other piece of information I have is the ad mentioned it may be a floor model or store return. Doubt that changes things one way or the other though.

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Re: Authentic Lenovo 90w charger? If so, for which model?

#7 Post by dr_st » Sun May 12, 2019 6:52 am

In the end, it doesn't really matter. If the knockoff is of high quality (as evident by the fact that they bothered to use the 22 digit code), and the PSU works and is identified correctly as a 90W model, then very little can go wrong. The circuitry in these chargers is fairly simple, much simpler than that in a battery, for instance.
Thinkpad 25 (20K7), X1 Carbon (20HQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

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Re: Authentic Lenovo 90w charger? If so, for which model?

#8 Post by DucatiThumper » Sun May 12, 2019 7:04 am

dr_st wrote:
Sun May 12, 2019 6:52 am
In the end, it doesn't really matter. If the knockoff is of high quality (as evident by the fact that they bothered to use the 22 digit code), and the PSU works and is identified correctly as a 90W model, then very little can go wrong. The circuitry in these chargers is fairly simple, much simpler than that in a battery, for instance.
Very true. I am bothered that I spent excess for what may not be an authentic part. Anyway thank you for all the help provided. Looking forward to my T440p (first Thinkpad) arriving and being active on the boards.

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Re: Authentic Lenovo 90w charger? If so, for which model?

#9 Post by dr_st » Sun May 12, 2019 7:10 am

I understand you; to give the seller the benefit of the doubt - if it's a good enough knockoff, the seller may have legitimately thought it was genuine.

Enjoy your Thinkpad and have fun on the forums. :thumbs-UP:
Thinkpad 25 (20K7), X1 Carbon (20HQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

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Re: Authentic Lenovo 90w charger? If so, for which model?

#10 Post by RealBlackStuff » Sun May 12, 2019 7:25 am

I have a very close same charger 42T4434/42T4435, but with round plug, and it's a real Lenovo.
One way to discern between real and knockoff is the weight.
The above (without the AC power cable) weighs exactly 11.7 oz. (334 grams) on a very accurate electronic scale.
If yours is lighter, then you have a Chinese knockoff.
If the same weight, then someone with some skills swapped the DC plug.
Lovely day for a Guinness! (the Real Black Stuff). And pigs CAN fly!

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Re: Authentic Lenovo 90w charger? If so, for which model?

#11 Post by DucatiThumper » Sun May 12, 2019 7:55 am

RealBlackStuff wrote:
Sun May 12, 2019 7:25 am
I have a very close same charger 42T4434/42T4435, but with round plug, and it's a real Lenovo.
One way to discern between real and knockoff is the weight.
The above (without the AC power cable) weighs exactly 11.7 oz. (334 grams) on a very accurate electronic scale.
If yours is lighter, then you have a Chinese knockoff.
If the same weight, then someone with some skills swapped the DC plug.
Thank you. I dont have an accurate scale to measure. But I think the latter is very possible by the looks of the charger. It very much looks authentic except the discrepancies of the plug.

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Re: Authentic Lenovo 90w charger? If so, for which model?

#12 Post by Thinkpad4by3 » Sun May 12, 2019 8:10 am

Looks real to me. I have a few Lenovo chargers that I know are authentic but looks like fakes. There is a specific font that lots of Chinese manufacturers use that kind of screens "fake" but Lenovo uses it too.
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The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

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Re: Authentic Lenovo 90w charger? If so, for which model?

#13 Post by DucatiThumper » Sun May 12, 2019 8:52 am

Thinkpad4by3 wrote:
Sun May 12, 2019 8:10 am
Looks real to me. I have a few Lenovo chargers that I know are authentic but looks like fakes. There is a specific font that lots of Chinese manufacturers use that kind of screens "fake" but Lenovo uses it too.
It may be real. But that means someone swapped the round plug for the slim/rectangular plug end.

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