Replacement Lenovo 45N1140 laptop battery. Catalog-listed compatibility includes 431, S440, V4400U. Match the old battery label, voltage, connector and shape before confirmation.

Compatibility profile

Laptop brand: Lenovo
Exact model: ThinkPad S440
Matching batteries: 1

Model and part number checked

COD when stock is confirmed

Service quote when unavailable

45N1140 is listed for Lenovo ThinkPad S440. We will reconfirm the old battery part number, voltage, connector, and shape before processing.

3,200 mAh4 cells14.8V

Request service

Support when stock is unavailable

There is still a service path

Get an approximate repair or rebuild quote for the current battery. A representative verifies the laptop and battery before final confirmation.

A starting price based on the issue
1 / 3 / 6 / 12 month support
A tracking code with your request

Request service quote

Share the symptoms and battery details. We will show an estimate and explain the next step.

1Issue and model
2Battery and price
3Contact

What problem are you having with your laptop?

Select every symptom that applies.

Battery is swollenOnly works while plugged inShuts down soon after unpluggingNot charging or percentage is stuckVery low backup after a full chargeBattery is not detectedOther problem

Laptop details

Optional

These details are optional. Search when you know them, or leave both fields blank and continue.

Laptop brand

Laptop model

Battery and service options

Choose the warranty and battery condition. An estimated range appears only when matching model data is available.

Choose a warranty

3 months6 months1 year

Is this the laptop's original battery with its original chip?

Yes-original battery and chip are availableNo-replacement battery or original chip is missingI am not sure

This battery was serviced beforeSelect this if its cells, board, or chip were worked on previously.

We do not have the required battery data for this model, so no estimated price is shown here. A representative will verify it for you.

Contact details

Provide a working phone number so our representative can confirm the issue and final price.

Name

Phone

Provide a working phone number so our representative can confirm the issue and final price.

Email (optional)

Additional note

Add any extra information if needed.

Need a hand?

Chat with us, track an order, or open the customer portal.

WhatsApp Messenger Track order Customer portal

Keep your laptop model or tracking code ready for faster support.