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My ThinkPad T23

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dcfbf
Freshman Member
Posts: 114
Joined: Wed May 01, 2024 7:28 pm
Location: Jurupa Valley, California

My ThinkPad T23

#1 Post by dcfbf » Tue Dec 30, 2025 2:38 am

As promised, here are pictures of my T23. I talked about this in the off topic area IIRC
This is basically a flex/showcase of I would say is a close to mint condition T23

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Here is the front view. I replaced the TrackPoint nub but everything else is original.
As you can see, there is virtually no wear, only some shiny keys. There are no cracks on the palmrest typical of this generation and the only defect is a line through the display.
Something interesting about the front view of the T23 is the fact that the ultrabay indicator is on the hinge rather than on the side of the laptop. I have never seen this on any other ThinkPad. I think this is a great feature though so I wonder why they never did something like this again.
I also installed the factory image of WIndows XP using a iso from the Internet Archive.

(Click for the full image)
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As you can see, the rubberized coating on this thing is in quite good condition. There is no stickiness and everything is smooooth.
I believe the T2x series is the first instance of the non raised IBM Logo. I personally prefer the non raised logo because it doesn't get worn away in a bag but I do think the raised logo of my more classic ThinkPads has its charm.

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The bottom as the only other defect on the machine: the RAM door. It is exhibiting the thing that T2x RAM doors love to do: have their paint flake off.
Otherwise, it is mint as well.
Correct me if I'm wrong but something interesting is that the battery used in the T23 is that it is compatible with the T2x, T30, R3x, and R40, meaning that one battery model is used between models 4 years apart. This is some versatility in a ThinkPad battery that I don't think we see again until the xx40-70 series batteries. The other longest ones would be the T6x battery that lasted for 3 release years, the xx10-30 battery for 3 years, and the P5x battery for 3 years.

(Click for the full image)
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The battery for it is a bit tempermental as I can have it be fully charged one second and be back at 0% the next. I have no idea how batteries work so if someone could tell my why this happens it will be much appreciated.
I also have the UltraBay battery for it, but it seems to be even more tempermental. For some reaason it has just died on me and returns an error. When it did work though, it worked ok with about 21Wh remaining.

That concludes my writeup.
Fun fact: I wrote everthing above this line on a Dell Latitude C810 ON BATTERY! It took about 1 hour and it dropped from 100% to 20%
The most time consuming part was actually manually typing out all the URLs though I did enjoy all of it due to the amazing mechanical keyboard on this thing.
I believe the C810 is the last Latitude with a mechanical keyboard as the C840 (the successor to the C810) switched to standard rubber dome + scissor switches.
IBM: 760ED, 600E, 570, T23, X30, T40, G41, T43 14", T43 UXGA, R52 IPS SXGA+
Lenovo: X41t, T60p UXGA, R60, T60 14", T61 4:3, T61 WUXGA, X61 IPS SXGA+, T500, X301, E40, X201t, W520, X220, T430, W541, T450s, Yoga 460, P71, X1 Carbon 6, T480, T14 G3, X1 Carbon 12

Current Dailies: X1C6, P71

lukee
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Posts: 471
Joined: Mon Oct 12, 2009 7:17 am
Location: CZ / Europe

Re: My ThinkPad T23

#2 Post by lukee » Mon Jan 19, 2026 4:45 am

Hi, thanks for this summary & nice setup!
I am currently also building a T23 project to extend my collection of ThinkPads.
I have built my unit up from two units which were only partially working (one has a bad LCD, one had a bad motherboard). My unit shows palmrest cracks on both sides of the keyboard (the part is only few millimeters thin in that places) but otherwise looks almost like now.
My upgrades consist of:
- CPU upgrade to P-III 1.13GHz + new silver paste (done).
- RAM upgrade to 1GB (modules are en route from China now).
- HDD upgrade to Samsung HM160HC - one of the fastest & most silent hard drives for ATA laptops (en route from China too).
- installation of WiFi antennas & Atheros WiFi card into miniPCI. Removal of miniPCI modem (my T23 has no antennas).
Battery is dead, ThinkPad is indicating it is charging it but the laptop holds the charge for something like ~2 minutes only. Due to that, I am also not able to upgrade the BIOS to the newest version since the update utility recognizes that the battery is not charged and won't run the flashing process. However I am thinking to send the battery to a pro workshop to get the cells & electronics replaced (new batteries can't be purchased anymore).
I would also love to get an SXGA screen in a good condition.

Mechanically, this seems to be a great classic ThinkPad much better made than e.g. T4x series (beside of the palmrest design flaw) - it's rugged, LCD hinges are still tight and electronics is the old school PCB design without RoHS limitations meaning it will probably outlive my R51e and X240. I was also studying and reviewing into details the design of the CPU cooler and it's a masterpiece of the mechanical and thermal engineering. :banana:

Will post the pictures soon.
Cheers!
Current: R51e, X240, T30 and T23 (current project)
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570

dcfbf
Freshman Member
Posts: 114
Joined: Wed May 01, 2024 7:28 pm
Location: Jurupa Valley, California

Re: My ThinkPad T23

#3 Post by dcfbf » Wed Jan 21, 2026 1:46 pm

Thank you,
You really have quite the maxxed out setup going on.
Do you know what the symptoms for the bad motherboard are? I may have a guess at what could be wrong.
I currently have 512 mb but I'm on the lookout for any 1gb kits that are a good price.

Will you explain why the heatsink is so great? it seems quite mediocre from just looking at it.
IBM: 760ED, 600E, 570, T23, X30, T40, G41, T43 14", T43 UXGA, R52 IPS SXGA+
Lenovo: X41t, T60p UXGA, R60, T60 14", T61 4:3, T61 WUXGA, X61 IPS SXGA+, T500, X301, E40, X201t, W520, X220, T430, W541, T450s, Yoga 460, P71, X1 Carbon 6, T480, T14 G3, X1 Carbon 12

Current Dailies: X1C6, P71

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