The 45N1091 battery is a replacement for Lenovo laptops with 11.1 V and 4250 mAh (47 Wh). It is compatible with models such as ThinkPad T430u, V490U and equivalent part numbers like L11S3P51. New product, with 3 years warranty and shipping from Spain in 24-48 h.
45N1091
45N1091 Battery for Lenovo Laptop - 11.1V 4250mAh 47Wh 3-Cell Li-Ion
New replacement battery, with 3 years warranty and shipping from Spain.
11.1 V, compatible with systems using 10.8 V.
4250 mAh / 47 Wh for extended autonomy.
3-cell Lithium-Ion (Li-Ion) cells, no memory effect.
Designed for Lenovo ThinkPad T430u, V490U models and compatible series.
This battery with reference 45N1091 is a replacement component designed for a wide range of Lenovo laptops. It provides a voltage of 11.1 V and a capacity of 4250 mAh (47 Wh), ideal for restoring the original autonomy of your device. Manufactured with 3 Lithium-Ion (Li-Ion) cells, this technology ensures efficient charging and a prolonged lifespan without memory effect.
It is the perfect solution for technicians and users who need to replace a defective or depleted battery in models such as the Lenovo ThinkPad T430u, V490UA, V590U, and V490U. Before making a purchase, it is essential to verify that the part number of your original battery matches 45N1091 or any of the listed compatible part numbers.
All our batteries are new, shipped from Spain, and feature overcharge and overvoltage protection circuits to ensure laptop safety.
The integrated electronics in the battery include protection against overvoltage and undervoltage, safeguarding both the battery and the internal components of the laptop. This component has been verified to ensure its correct operation and compatibility.
For technical services and individual users who need to replace the depleted or defective battery of their compatible Lenovo laptop.
| Voltage | 11.1 V |
|---|---|
| Capacity | 4250 mAh |
| Energy | 47 Wh |
| Cell Technology | Li-Ion |
| Number of cells | 3 |
|---|---|
| Color | Black |
| Condition | New |
Always check the part number printed on your original part before ordering; if in doubt, contact us with the exact model of your device.
The safest way is to remove the original battery from your laptop and compare the part number printed on it. If it matches 45N1091 or any of the codes in the 'compatible part numbers' list (such as L11S3P51 or 45N1089), this battery is the correct one. You can also check if your laptop model, such as the ThinkPad T430u, is on the list of compatible models.
Yes, it is highly recommended. To calibrate it, charge the battery to 100% with the laptop turned off. Then, turn it on and use it with the battery until it is completely depleted and the device shuts down. Finally, recharge it to 100% without interruptions. This process helps the operating system recognize the battery's real capacity and display the charge percentage accurately.
The battery has a 3-year warranty for private customers and 1 year for professionals. If upon receipt it is not compatible or has any defect, you have 14 days to return it. You can manage the return shipment on your own or request a home pickup for 8.90 € in Spain and Portugal, which will be deducted from the refund.
All orders are prepared and shipped from our warehouse in Spain. For Spain and Portugal, the delivery time is 24 to 48 business hours. For other European Union destinations, such as France or Germany, the timeframe varies between 2 and 5 business days.
Battery life largely depends on the laptop's usage (screen brightness, running programs, connectivity) and the system's power configuration. With 47 Wh of capacity, you can expect autonomy similar to that of the original battery when it was new, typically between 2 and 4 hours for standard office use.
Data sheet
No reviews yet for this product. After your purchase you will receive an email to leave yours.