Lenovo ThinkPad Battery For L440 L540 Series 45N1158 45N1159 45N1160

Lenovo ThinkPad L440 L540 Battery 45N1158 45N1159 45N1160

If your Lenovo ThinkPad L440 or L540 is suffering from short battery life, unexpected shutdowns, or a battery that no longer holds a charge, replacing the battery can restore dependable portable use. The Lenovo ThinkPad L440 L540 Battery is designed around the specifications associated with Lenovo battery part numbers 45N1158, 45N1159, and 45N1160.

This battery family is listed in Lenovo’s official battery safety and compliance documentation. Lenovo records 45N1158/45N1159 at 10.8V and 48Wh, while 45N1160/45N1161 is also listed at 10.8V and 48Wh.

If you are comparing options for a Lenovo laptop battery in Bangladesh, check your existing battery’s part number before ordering. For more laptop power options, you can also explore Laptop Battery on CARTX.

Lenovo ThinkPad L440 L540 Battery Specifications

Lenovo’s official compliance documentation confirms the 45N1158/45N1159 family at 10.8V and 48Wh, and separately identifies 45N1160/45N1161 at 10.8V and 48Wh.

Compatible Lenovo ThinkPad Models

This battery is intended for selected Lenovo ThinkPad L-series configurations, including:

• Lenovo ThinkPad L440
• Lenovo ThinkPad L540

Because laptop configurations can vary, the safest way to confirm compatibility is to compare the FRU/part number printed on your existing battery before purchasing.

Common numbers associated with this battery family include:

45N1158, 45N1159, 45N1160, 45N1161 and 45N1771.

Lenovo’s official documentation specifically associates 45N1158 with 45N1159 and 45N1771, while 45N1160 is paired with 45N1161 in its compliance records.

For customers looking for other replacement options, see Lenovo Laptop Battery and Laptop Accessories on CARTX.

10.8V 48Wh Battery for ThinkPad L440 and L540

The 10.8V 48Wh specification makes this battery suitable for customers searching specifically for a ThinkPad L440 or L540 battery matching the relevant original battery specifications.

A 48Wh rating indicates the battery’s nominal energy capacity. Actual runtime will depend on the laptop’s processor, display brightness, workload, operating system, battery condition, and power-management settings.

So, if you are searching for Lenovo ThinkPad L440 battery price in Bangladesh or Lenovo ThinkPad L540 battery price in Bangladesh, always compare the voltage, Wh rating, connector, physical design, and part number rather than choosing only by model name.

How to Check Lenovo ThinkPad Battery Compatibility

Before ordering, follow these simple steps:

1. Shut down your ThinkPad and disconnect the charger.
2. Locate the label on the existing battery.
3. Find the battery’s FRU, ASM, or part number.
4. Check whether it matches 45N1158, 45N1159, or 45N1160.
5. Confirm the voltage and capacity.
6. Compare the battery shape and connector with your existing battery.
7. If you are still unsure, contact CARTX before placing your order.

This simple check can help prevent ordering an incompatible ThinkPad L440/L540 replacement battery.

Is 45N1158 an Original Lenovo Battery Part Number?

Yes. 45N1158 is an officially documented Lenovo battery part number. Lenovo’s own battery compliance documentation lists 45N1158 together with 45N1159 and 45N1771, with a 10.8V and 48Wh specification.

However, there is an important distinction between an official Lenovo part number and a factory-original Lenovo battery. The Lenovo documentation verifies the part number and battery specification; it does not verify the authenticity of a particular retail unit.

For that reason, customers should verify the physical product, packaging, label, FRU information, supplier documentation, and warranty before treating a battery as factory-original Lenovo stock.

Official verification source: Lenovo Battery Compliance & MSDS

Why Buy Lenovo ThinkPad Battery from CARTX?

CARTX focuses on providing branded and quality-tested technology products to customers in Bangladesh. You can shop laptop batteries from CARTX and select the battery that matches your laptop model and part number.

When purchasing a replacement battery, CARTX recommends checking compatibility before ordering. This is especially important for older ThinkPad models because several batteries can have similar model compatibility but different specifications.

You can also explore Computer Accessories for additional laptop and computing accessories.

Lenovo ThinkPad L440 L540 Battery Price in Bangladesh

The price of the Lenovo ThinkPad L440 L540 45N1158 battery can vary depending on battery condition, cell quality, manufacturer, warranty, and whether the unit is factory-original or a compatible replacement.

For the latest Lenovo ThinkPad battery price in Bangladesh, check the current CARTX product listing before ordering.

CTA:
Need a replacement battery for your ThinkPad L440 or L540? Check the part number 45N1158, 45N1159, or 45N1160 and order your compatible Lenovo battery from CARTX.

Original vs Compatible Lenovo Battery: What Should You Check?

Not every battery carrying a Lenovo-compatible part number is necessarily an original Lenovo-manufactured battery. Some third-party manufacturers produce replacement batteries using the same compatible part numbers.

Therefore, customers should check:

• Lenovo branding and packaging
• FRU/ASM part number
• Battery label and manufacturing information
• Voltage and Wh rating
• Physical connector and battery shape
• Seller warranty
• Supplier documentation
• Product condition

For technical verification, Lenovo’s official battery compliance database is a useful reference because it confirms the documented specifications of Lenovo battery part numbers.

Key Benefits of This ThinkPad Battery

• Designed for selected ThinkPad L440/L540 configurations
• Supports 45N1158, 45N1159 and 45N1160 part-number searches
• 10.8V nominal battery voltage
• 48Wh battery specification
• Lithium-ion battery technology
• Suitable for replacing an aged or degraded battery
• Useful for office, business and everyday computing
• Easy compatibility checking through the existing battery part number
• Available for customers searching for a Lenovo laptop battery in Bangladesh

What Problems Can a Worn Laptop Battery Cause?

An aging laptop battery can cause several common problems:

• Very short backup time
• Battery percentage dropping quickly
• Laptop shutting down unexpectedly
• Battery not charging fully
• Laptop working only when connected to the charger
• Battery warning messages
• Reduced portability

If your ThinkPad L440 or L540 has these symptoms, checking the existing battery’s part number is a good first step before purchasing a ThinkPad battery replacement.

AEO: Quick Answer

What battery does the Lenovo ThinkPad L440 use?

Selected ThinkPad L440 configurations use battery families identified by compatible Lenovo part numbers. The 45N1158/45N1159 family is officially documented by Lenovo at 10.8V and 48Wh.

What battery does the Lenovo ThinkPad L540 use?

Selected ThinkPad L540 configurations can use compatible battery families from the 45N11xx range. Always compare the existing battery’s FRU or part number before purchasing.

What are 45N1158 and 45N1159?

45N1158 and 45N1159 are Lenovo battery part numbers documented in Lenovo’s battery compliance records. The documented 45N1158 battery specification is 10.8V and 48Wh.

What is the specification of Lenovo 45N1160?

Lenovo’s official documentation lists 45N1160/45N1161 at 10.8V and 48Wh.

How do I know whether this battery will fit my ThinkPad?

Check the part number printed on your current battery. If you find 45N1158, 45N1159, or 45N1160, compare the remaining specifications and physical connector before ordering.

Where can I buy a Lenovo ThinkPad battery in Bangladesh?

You can purchase compatible laptop batteries online through CARTX Bangladesh. Check the product specifications and match your existing battery part number before ordering.

Frequently Asked Questions

Does the 45N1158 battery work with ThinkPad L440?

It is associated with selected ThinkPad configurations, but compatibility should be confirmed using the FRU/part number printed on the original battery.

Does 45N1159 replace 45N1158?

These numbers are documented together by Lenovo as part of the same battery family. However, do not rely solely on the part-number relationship; verify the battery specifications and physical compatibility for your particular ThinkPad.

Is 45N1160 a 48Wh battery?

Yes. Lenovo’s official battery compliance documentation lists 45N1160/45N1161 with a 10.8V voltage and 48Wh rating.

Can I use a replacement battery instead of the original?

A properly compatible replacement battery can be used when it matches the laptop’s required specifications, connector, physical design, and battery communication requirements. Always choose a reputable supplier and verify compatibility.

Should I check my old battery before buying?

Yes. This is the safest approach. Compare the FRU/ASM number, voltage, capacity, connector and physical design before purchasing.

Where can I order this battery?

You can check the latest availability and price through CARTX and order online in Bangladesh.

Final Recommendation

For a ThinkPad L440 or L540 battery replacement, do not choose only by the laptop model. First check the part number on your existing battery. If it is 45N1158, 45N1159, or 45N1160, compare the specifications and connector with the replacement offered by CARTX.

Lenovo’s official documentation provides the strongest source for validating these battery part numbers and their documented electrical specifications.

Ready to replace your old ThinkPad battery? Shop laptop batteries from CARTX and verify your part number before ordering.