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Lenovo ThinkPad T440s - spare parts, FRU numbers and how to choose

Q: Do parts from the ThinkPad T450s or T440 fit the T440s?

The T440s and T450s (successor) are twin, thin 14" designs - they share most cases, bezels, hinges, cables and palmrests. The T440 (without the "s"), in turn, is a thicker, different model and its parts often do not fit. The main difference between the T440s and T450s is the motherboard (Haswell vs Broadwell) - match that strictly by FRU number.

Q: What battery does the T440s have and which one to choose?

The T440s uses the Power Bridge system: an internal battery plus a second external one, replaceable from the rear (3- or 6-cell) - the external one can be swapped without shutting the laptop down. Choose the variant by FRU number. Separately there is a small CMOS battery backing up the BIOS settings.

Q: What charger does the T440s use?

The T440s charges with a Slim Tip (rectangular) adapter, 45 W or 65 W - the same type as the T440 / T450 and many ThinkPads of that period. Choose a wattage no lower than the original. USB-C charging will not power the T440s.

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In short: in a Lenovo ThinkPad T440s you can replace virtually every component - from the battery (Power Bridge system), palmrest and cables, through cases and the display, to the motherboard. The most reliable way to match the right part is the FRU / Part Number printed on the original component. We confirm model compatibility against the official Lenovo Hardware Maintenance Manual and the laptop's As-Built number, so each part lists verified compatible models and replacement numbers. Below is the full list of T440s parts grouped by component - click to go to the offer.

T440s spare parts - full list with FRU numbers

Original Lenovo parts compatible with the ThinkPad T440s. Many chassis and display components are shared with the T450s (the successor in the same thin 14" line). Click a part to go to the offer.

Frequently asked questions about T440s parts

Do parts from the ThinkPad T450s or T440 fit the T440s?

The T440s and T450s (successor) are twin, thin 14" designs - they share most cases, bezels, hinges, cables and palmrests. The T440 (without the "s"), in turn, is a thicker, different model and its parts often do not fit. The main difference between the T440s and T450s is the motherboard (Haswell vs Broadwell) - match that strictly by FRU number.

What battery does the T440s have and which one to choose?

The T440s uses the Power Bridge system: an internal battery plus a second external one, replaceable from the rear (3- or 6-cell) - the external one can be swapped without shutting the laptop down. Choose the variant by FRU number. Separately there is a small CMOS battery backing up the BIOS settings.

Which LCD display cable should I choose for the T440s?

It depends on the panel - the T440s came with an HD and a Full HD panel (including touch). Each type has its own eDP cable with a different FRU number; an incompatible cable = no image. First determine your display type, then choose an item from the Display, cables and hinges section.

Palmrest for the T440s - with or without a fingerprint reader?

Choose a palmrest matching what you have: versions differ in the presence of a fingerprint reader and in the keyboard layout. Variants with FRU numbers are in the Palmrest, keyboard, touchpad section.

Which motherboard fits the T440s?

The T440s used Intel 4th generation processors (Haswell), in i5 / i7 versions. The motherboard is matched strictly by FRU number - check the marking of your current board or give us your configuration.

What charger does the T440s use?

The T440s charges with a Slim Tip (rectangular) adapter, 45 W or 65 W - the same type as the T440 / T450 and many ThinkPads of that period. Choose a wattage no lower than the original. USB-C charging will not power the T440s.

How do I check the FRU number of a T440s part?

The FRU number (Part Number) is printed on the component itself - on the battery, palmrest, cable or board. It is the most reliable way to choose. We described how to read it in our guide How to read a Lenovo FRU number.

Which T440s parts are replaced most often?

The most frequently replaced are the battery, the display cable and hinges, the palmrest and the bottom case. You will find all these items in the list above with their FRU numbers.

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Lenovo ThinkPad T440s - spare parts, FRU numbers and how to choose

T440s spare parts - full list with FRU numbers

Main batteries

CMOS batteries (BIOS backup)

Palmrest, keyboard, touchpad

Display, cables and hinges

Cases and bezels

Motherboard and electronics

Docks and power

Other small parts