B21N1818 Battery for Asus Laptop - 7.6V 4150mAh 2-Cell Li-Polymer
€44.00
Tax included
The B21N1818 battery is a compatible replacement for Asus VivoBook 15 laptops with 7.6V and 4150mAh. It is equivalent to part number C21N1818-1 and compatible with models such as A512, X512, and R512. It is a new product, with a 3-year warranty and shipping from Spain in 24-48 h.
B21N1818
B21N1818 Battery for Asus Laptop - 7.6V 4150mAh 2-Cell Li-Polymer
Compatible replacement battery, new and with 3 years warranty.
- 7.6V 4150mAh
- Compatible with Asus VivoBook 15
- New
Key features
-
Nominal Voltage
7.6 V
-
Capacity
4150 mAh (31.5 Wh)
-
Number of Cells
2 cells
-
Technology
Li-Polymer (Lithium Polymer)
Product description
The replacement battery with reference B21N1818 is specifically designed for a wide range of Asus VivoBook 15 laptops. It provides a voltage of 7.6 V and a capacity of 4150 mAh (equivalent to 31.5 Wh), ensuring reliable autonomy for the device. Its 2-cell composition with Li-Polymer technology offers stable and safe performance.
This component is the ideal solution to replace an exhausted or defective battery, allowing you to restore the portability of your computer. It is compatible with numerous models from the Asus A512, R512, and X512 series, as well as with the equivalent part number C21N1818-1. It is a new, verified product, ready for installation.
Before making the purchase, it is essential to verify that the part number of your original battery matches B21N1818 or any of the listed compatible part numbers. This ensures perfect electrical and physical compatibility with your device.
Who is this product for?
For technical services and individual users who need to replace the battery of their Asus VivoBook 15 laptop to restore its autonomy.
Ideal for
- Replacement of an exhausted battery in an Asus VivoBook 15 A512FA.
- Repair of an Asus X512 laptop that does not charge or does not retain charge.
- Restore the portability of an Asus R512F device for use without a power connection.
Technical specifications
| Voltage | 7.6 V |
|---|---|
| Capacity (mAh) | 4150.0 mAh |
| Capacity (Wh) | 31.5 Wh |
| Number of cells | 2 |
|---|---|
| Cell Technology | Li-Polymer |
| Compatible Brand | Asus |
|---|---|
| Compatible Series | VivoBook 15 A512, R512, X512 |
Compatibility
Compatible part numbers
- B21N1818
- C21N1818-1
Compatible laptop models
- VivoBook 15 A512
- A512DA
- A512FA
- A512JA
- R512F
- R512U
- X512
- X512DA
- X512FA
- X512FL
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
My laptop is an Asus VivoBook 15 X512FL, is this the correct battery?
Yes, this B21N1818 battery is fully compatible with the Asus VivoBook 15 X512FL model. To be 100% sure, we recommend turning off the laptop, removing the old battery, and checking that the part number printed on it is B21N1818 or C21N1818-1.
Is it necessary to calibrate the battery the first time it is used?
Yes, for optimal performance, an initial calibration cycle is recommended. Charge the battery to 100%, let it rest for an hour, then use it until the laptop shuts down due to low battery (approx. 5%). Finally, charge it back to 100% without interruptions. This helps the system recognize the actual capacity of the new battery.
What warranty does it have and what do I do if it doesn't work or doesn't fit?
The battery has a 3-year warranty for private customers and 1 year for professionals. If 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.
How long does it take for the order to arrive in Madrid?
All our shipments are made from our warehouse in Spain. For orders to Madrid and the rest of the peninsula, the delivery time is 24 to 48 working hours if you place the order before 16:00. You will receive a tracking number to check the status of the shipment at all times.
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-AS165
Data sheet
- CG. Reference
- B21N1818
- CG. Type of piece
- Battery
- CG. State
- New
- CG. Warranty
- 3 years
- CB. Voltage
- 7.6 V
- CB. Number of cells
- 2
- CB. Cell technology
- Li-Polymer
- CB. Capacity
- 4150 mAh
New
☆☆☆☆☆
No reviews yet for this product. After your purchase you will receive an email to leave yours.
Know our store?
Review us on Google
-
Frequently purchased together
-
Featured Products
B21N1818 replacement battery for Asus VivoBook 15 laptops. Offers 7.6V and 4150mAh (31.5Wh) with 2 Li-Polymer cells. Compatible with A512, R512, and X512 series. New product with 3 years warranty.
0