LAPTOP BATTERY FOR LENOVO THINKPAD T440S T440 X240

LAPTOP BATTERY LENOVO THINKPAD T440S T440 ASM 45N1126, ASM 45N1132, FRU 45N1125, FRU 45N1127

High quality compatible laptop batteries

These compatible laptop batteries are designed to offer performance equivalent to that of the original battery, maintaining autonomy, stability and safety in daily use.

They are not original batteries from the manufacturer. of the laptop, but compatible batteries developed under demanding technical standards, which allows us to offer an excellent quality/price ratio without compromising the operation of the equipment.

Why choose a quality compatible battery

A well-designed compatible battery not only reduces cost, but can offer completely reliable performance if it meets the appropriate parameters.

These batteries are manufactured under certified quality control processes in accordance with ISO 9001 and ISO standards. 14001, which guarantees a high level of demand in both manufacturing and environmental management.

In these batteries, priority is given to:

• Real compatibility with the equipment
• Stability in charging and discharging
• Integrated electronic protections
• Optimized useful life

This allows a safe and efficient user experience, comparable to the original battery under normal conditions of use.

What you should check before buying

To ensure that you choose the correct battery, it is important to verify the following data:

• Original reference of the battery
• Exact model of the laptop
• Voltage (V) and capacity (mAh or Wh)
• Shape and type of connector

On each product sheet you will find a list of compatible models and equivalent references to facilitate identification.

FEATURES

Specifications

Compatible models

• Lenovo ThinkPad X240 series
• Lenovo ThinkPad T440S series
• Lenovo ThinkPad series T440
• Lenovo ThinkPad S440 series
• Lenovo ThinkPad S540 series
• Lenovo ThinkPad L450
• Lenovo ThinkPad L460
• Lenovo ThinkPad L470
• Lenovo ThinkPad T450S
• Lenovo ThinkPad X250
• Lenovo ThinkPad To avoid errors and returns, compare your laptop battery with the one shown in the photographs. In some cases they may match the P/N number and not physically match.

  This laptop battery is compatible with the indicated models (and more). You can see the complete model of your laptop located below it. If you cannot find the model of your laptop or do not know which battery is compatible, please ask and we will be happy to inform you.

  
  

  Electronic protections

  Against deep discharge	Automatic cut-off to protect the cells.
  Protection thermal	Temperature monitoring and cut-off.
  Against short circuits	Instant safety response.
  Charging temperature control	Stable and safe charging.
  RoHS	Restriction of hazardous substances

  
  

  Your model is not listed?

  It is possible that your laptop is compatible with this battery even if it does not appear explicitly in the list. This may occur because some manufacturers use the same battery in different models or variants.

  In this case, it is recommended to check the following:

  • The reference of the original battery matches one of those indicated
  • The voltage is exactly the same (critical data)
  • The connector and shape are identical
  • The dimensions are compatible with the laptop housing

  If these points coincide, it is very It is likely that the battery is compatible with the equipment, even if the model is not listed.

  In case of doubt, it is advisable to verify compatibility before making the purchase to avoid errors.

  
  

  Real advantages when replacing the batterybattery

  • Recovers autonomy
    Allows you to use the laptop again without constantly depending on the charger.
  • Stable operation
    Avoids unexpected shutdowns and improves the behavior of the equipment.
  • Longer useful life
    Reduces the need for frequent replacements.
  • Simple installation
    In most cases cases, replacement is quick and does not require advanced technical knowledge.

  
  

  Compatibility: the key point

  Compatibility is the most important aspect when choosing a laptop battery. Therefore, in this sheet you will find all the compatible references and equivalent models associated with this product.

  Choosing correctly guarantees proper operation and avoids problems during installation or use.

  
  

  Recommendations for replacing the battery

  Replacing the battery of a laptop is a simple process in most cases, but it is important to follow a series of recommendations to guarantee a correct and safe installation.

  Before installation

  • Turn off the laptop completely (not in sleep mode)
  • Disconnect the charger and any peripherals
  • Work on a clean, dry surface free of static electricity

  During replacement

  • Handle the battery with care, avoiding bumps or deformations
  • Do not force connectors or parts
  • Make sure that the connector fits correctly in its position
  • Check that the battery is securely fixed in its housing

  First use of the battery

  To optimize performance and useful life, it is recommended to perform a complete initial charging cycle:

  • Charge the battery to 100% before first use
  • Use the laptop until the charge is reduced to approximately 10-15%
  • Recharge fully

  This process helps to correctly calibrate the laptop's power management system.

  Tips to extend battery life

  • Avoid frequent full discharges (0%)
  • Do not keep the battery constantly at 100% for long periods
  • Avoid prolonged exposure to high temperatures
  • Always use compatible chargers that are in good condition

  Important

  If during installation you detect that the battery does not fit correctly or the connector does not match exactly, the installation should not be forced. In that case, it is advisable to check the compatibility before continuing.