Lenovo ThinkPad T490 T495 P43s P14 T14 L18C3P71 Battery

Lenovo ThinkPad T490 and T14 Battery: Restored Autonomy

This replacement battery is intended for Lenovo ThinkPad T490, T495, P43s, P14s and T14 laptops. It is the designated solution to recover the equipment's autonomy when the internal accumulator has lost its charge retention capacity. Installation allows the laptop to be used away from the power outlet with total energy reliability.

Technical Specifications

• Part type: Internal rechargeable battery
• Compatibility: ThinkPad T490; ThinkPad T495; ThinkPad P43s; ThinkPad T14
• Reference: L18C3P71
• Quality: OEM

When to Replace

• The laptop shuts down immediately when the charger is disconnected.
• Autonomy lasts much less time than previously.
• The operating system displays a battery degradation warning.
• The equipment does not charge beyond a certain percentage — confirm the diagnosis.

Notes for the Technician

• Test before applying: connect the battery without sticking it down and confirm that the equipment boots, charges and displays the percentage correctly. Thus, if there is any problem, the return or warranty is handled quickly and simply.
• Difficulty: Easy.
• Access the component by removing the screws from the bottom chassis cover with a suitable screwdriver.
• Deactivate the internal battery beforehand in the BIOS/UEFI menu before starting physical disassembly.
• Disconnect the battery cable from the motherboard before removing the accumulator fixing screws.
• Avoid bending, puncturing or exerting excessive pressure on the cells during handling.

What Distinguishes This Version

This OEM quality version complies with the electrical and physical specifications required for seamless integration into the equipment chassis. It is the ideal option for professional technicians and users who want an economical and reliable repair without compromising performance.

Frequently Asked Questions

Is the L18C3P71 reference compatible with the ThinkPad T14 Gen 1?

Yes, this part is compatible with the first generation ThinkPad T14, as well as ThinkPad T490, T495, P43s and P14s models that share this internal reference.

The laptop does not turn on without the charger connected, is the problem certainly the battery?

In most cases this symptom indicates failure in the accumulator cells, but a fault in the motherboard charging circuit can also cause the same behaviour — confirm the diagnosis with bench tests.

Item tested by Micro Wire before shipping with fast dispatch from Portugal. If you do not want to repair it we can do it for you.