45N1144 Battery for Lenovo Laptop - 10.8V 4400mAh 6-Cell Li-Ion
€35.99
Tax included
The 45N1144 battery is a compatible replacement for Lenovo ThinkPad laptops with a capacity of 4400 mAh and 10.8V. It is compatible with over 20 part numbers and models such as the T440p, T540p, and W540. New battery, with a 3-year warranty and shipping from Spain in 24-48 hours.
45N1144
45N1144 Battery for Lenovo Laptop - 10.8V 4400mAh 6-Cell Li-Ion
Replacement battery for ThinkPad T440p, T540p, and W540 series. New, with 3-year warranty.
- 4400 mAh / 10.8V
- 6 Li-Ion Cells
- New
Key features
-
Capacity
4400 mAh for extended autonomy.
-
Nominal Voltage
10.8V, compatible with 11.1V systems.
-
Technology
6 Lithium-Ion (Li-Ion) cells for stable performance.
-
Compatibility
Designed for Lenovo ThinkPad L440, L540, T440p, T540p, W540, and W541 series.
Product description
The replacement battery with reference 45N1144 is the ideal solution to restore the autonomy of Lenovo ThinkPad laptops from the L, T, and W series. Designed with 6 Lithium-Ion (Li-Ion) cells, it offers a capacity of 4400 mAh and a nominal voltage of 10.8V (compatible with 11.1V systems), ensuring stable and long-lasting performance.
Each unit has been inspected by our technical service to guarantee its reliability. It incorporates protection circuits against overvoltage and undervoltage to protect both the battery and the computer. It is a direct replacement for a wide range of original part numbers and is compatible with key models such as ThinkPad T440p, T540p, W540, W541, L440, and L540.
For optimal performance, it is recommended to perform a complete charge and discharge cycle (charge to 100% and use until the device indicates low battery) during the first 3-4 uses. Avoid exposure to extreme temperatures and do not leave the battery completely discharged for prolonged periods to maximize its lifespan.
Who is this product for?
For technical services and individual users who need to replace the depleted battery of a compatible Lenovo ThinkPad laptop.
Ideal for
- Battery replacement in a Lenovo ThinkPad T440p.
- Restore the autonomy of a ThinkPad W540 laptop.
- Repair of a Lenovo ThinkPad L540 that does not hold a charge.
- Replacement of an original battery with part number 45N1145 or 0C52863.
Technical specifications
| Capacidad | 4400 mAh |
|---|---|
| Voltaje | 10.8V / 11.1V |
| Number of Cells | 6 Cells |
| Tecnología | Li-Ion |
| Color | Black |
|---|---|
| Condition | New |
| Protections | Overvoltage and undervoltage |
Compatibility
Compatible part numbers
- 0C52863
- 0C52864
- 45N1144
- 45N1145
- 45N1147
- 45N1148
- 45N1149
- 45N1150
- 45N1151
- 45N1152
- 45N1153
- 45N1154
- 45N1155
- 45N1156
- 45N1157
- 45N1158
- 45N1159
- 45N1160
- 45N1161
- 45N1162
- 45N1163
- 45N1769
Compatible laptop models
- Lenovo ThinkPad L440
- Lenovo ThinkPad L540
- Lenovo ThinkPad T440p
- Lenovo ThinkPad T540p
- Lenovo ThinkPad W540
- Lenovo ThinkPad W541
Always check the part number printed on your original part before ordering; if in doubt, contact us with the exact model of your device.
Frequently asked questions
How do I know if this 45N1144 battery is compatible with my Lenovo laptop?
To ensure compatibility, check the part number on your original battery. If it matches 45N1144 or any of the more than 20 part numbers listed on our product page, it is compatible. You can also verify if your laptop model (e.g., ThinkPad T440p, L540) is on the list of compatible models. If you have doubts, contact our technical support.
Is it necessary to calibrate the battery the first time I use it?
Yes, to calibrate the cells and ensure the charge indicator is accurate, we recommend performing 3 or 4 complete cycles. Charge the battery to 100%, use it until the laptop indicates low battery (10-15%), and then fully recharge it. This maximizes initial lifespan and performance.
What warranty does it have and how do returns work if it doesn't suit me?
The battery has a 3-year warranty for private customers and 1 year for professionals. If it is not compatible, you have 14 days to return it. You can manage the return shipping yourself or request a home collection for 8.90€ in Spain and Portugal, which will be deducted from the refund.
How long will my order take to arrive?
All our products are shipped from our warehouse in Spain. For orders to Spain and Portugal, delivery is within 24-48 business hours. For other EU destinations, the timeframe varies between 2 and 5 business days. Orders placed before 16:00 (Fridays, 15:00) are prepared on the same day.
Warranty, returns and shipping
- Warranty: 3-year warranty (1 year for business customers)
- Returns: 14-day returns (ship it yourself or €8.90 home pickup in Spain and Portugal)
- Shipping: EU delivery 48-120 h
- Condition: New
BAT-LE89
Data sheet
- CG. Reference
- 45N1144
- CG. Type of piece
- Battery
- CG. State
- New
- CG. Warranty
- 3 years
- CB. Voltage
- 10.8V
- CB. Number of cells
- 6
- CB. Cell technology
- Li-Ion
- CB. Color
- Black
- CB. Capacity
- 4400 mAh
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45N1144 replacement battery for Lenovo ThinkPad laptops. Offers 4400 mAh and 10.8V with 6 Li-Ion cells. Compatible with L440, L540, T440p, T540p, W540, and W541 series. New, inspected product with a 3-year warranty.
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