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Replacement Battery B31N1912 for ASUS VivoBook 14 E410 / 15 E510, 1 Year Warranty
42Wh · 11.55V · 3-Cell Li-polymer · 1 Year Warranty
Rs. 5,500Rs. 6,000
Save Rs. 500
Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509: 32Wh · 7.6V · 2-Cell Li-polymer · 1 Year Warranty
No reviews yet, write the first oneRs. 5,500
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In stock, only 5 left
Last updated 11 Oct 2026
1
- 1 year proud nepal warranty
- Free deliveryAll over Nepal, usually the same day inside Kathmandu Valley, 2 to 3 days elsewhere in Nepal, sent with Nepal Can Move
- Visit the store in Putalisadak, open every day, 10 am to 8 pm
- Genuine productsWarranty policy
- Part number:
- B21N1818-3
- In the box:
- 1 x Battery
Highlights
- Product Type
- Laptop Battery
- Capacity mAh
- 4212mAh
- Capacity Wh
- 32Wh
- Nominal Voltage
- 7.6V
- Cell Count
- 2 Cells
- Chemistry
- Li-polymer
Click to enlargeSpecifications
Replacement battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509. It fits ASUS VivoBook 14 X409FB, X409FL, X409JB, X409UJ and VivoBook 15 F509UA, X509DA, X509FB, X509MA, X509UA, X509UJ; B21N1818 comes in several shapes, so check the code and shape of your old battery. Also sold as B21N1818. Check the code printed on your old battery before ordering. 1 Year shop warranty from Proud Nepal IT Suppliers.
| Specification | Details |
|---|---|
| Product Type | Laptop Battery |
| Model | B21N1818-3 |
| Compatible Laptop Models | ASUS VivoBook 14 X409FB, X409FL, X409JB, X409UJ and VivoBook 15 F509UA, X509DA, X509FB, X509MA, X509UA, X509UJ; B21N1818 comes in several shapes, so check the code and shape of your old battery |
| Compatible Battery Part Numbers | B21N1818 |
| Chemistry | Li-polymer |
| Nominal Voltage | 7.6V |
| Capacity mAh | 4212mAh |
| Capacity Wh | 32Wh |
| Cell Count | 2 Cells |
| Internal / External | Internal |
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Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509
Rs. 5,500
Questions & answers
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Compare Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 with similar products
Compare side by side →| Specification |  Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 |  Replacement Battery B31N1912 for ASUS VivoBook 14 E410 / 15 E510 |  Replacement Battery B31N1729 for ASUS VivoBook S15 S530 / X530 |  Acer AC14B8K Laptop Battery |
|---|---|---|---|---|
| Price | Rs. 5,500 | Rs. 5,500 | Rs. 5,500 | Rs. 5,500 |
| Brand | ASUS | ASUS | ASUS | ACER |
| Availability | In stock | In stock | In stock | In stock |
| Warranty | 1 year (proud nepal warranty) | 1 Year Warranty | 6 Months Warranty | 1 Year Warranty |
| Product Type | Laptop Battery | – | – | – |
| Model | B21N1818-3 | – | – | – |
| Compatible Laptop Models | ASUS VivoBook 14 X409FB, X409FL, X409JB, X409UJ and VivoBook 15 F509UA, X509DA, X509FB, X509MA, X509UA, X509UJ; B21N1818 comes in several shapes, so check the code and shape of your old battery | – | – | – |
| Compatible Battery Part Numbers | B21N1818 | – | – | – |
| Chemistry | Li-polymer | – | – | – |
| Nominal Voltage | 7.6V | – | – | – |
| Capacity mAh | 4212mAh | – | – | – |
| Capacity Wh | 32Wh | – | – | – |
| Cell Count | 2 Cells | – | – | – |
| Internal / External | Internal | – | – | – |
| Part number | B21N1818-3 | – | – | – |
| Battery | – | 42Wh | 42Wh | 48Wh · 3220mAh |
| Features | – | 11.55V · 3-Cell Li-polymer | 11.52V · 3-Cell Li-polymer | 15.2V · 4-Cell Li-Polymer · for Aspire E5-473 E5-573 E5-574 E5-575 F5-571 F5-572 R3-471 R5-471 V3-574 · AC14B3K AC14B7K |
Frequently asked questions
What is the price of Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 in Nepal?
Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 costs Rs. 5,500 at Proud Nepal IT Suppliers (offer price; regular price Rs. 6,000), with free delivery all over Nepal.
Is Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 in stock?
Yes, Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 is in stock. Order it online or visit our store in Putalisadak, Kathmandu.
What are the specifications of Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509?
Product Type: Laptop Battery; Model: B21N1818-3; Compatible Laptop Models: ASUS VivoBook 14 X409FB, X409FL, X409JB, X409UJ and VivoBook 15 F509UA, X509DA, X509FB, X509MA, X509UA, X509UJ; B21N1818 comes in several shapes, so check the code and shape of your old battery; Compatible Battery Part Numbers: B21N1818; Chemistry: Li-polymer; Nominal Voltage: 7.6V; Capacity mAh: 4212mAh; Capacity Wh: 32Wh.
What is the part number of Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509?
The part number (MPN) of Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 is B21N1818-3.
What warranty does Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 come with?
Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 comes with 1 year warranty from Proud Nepal IT Suppliers. Keep the bill, the box and the serial-number sticker for claims.
What's in the box with Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509?
1 x Battery.
Is Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 from Proud Nepal IT Suppliers genuine?
Yes. Everything Proud Nepal IT Suppliers sells is genuine and new, with a bill from Proud Nepal IT Suppliers Pvt. Ltd. and the warranty of the brand or its authorised distributor in Nepal, unless the product page says otherwise.
Do you deliver Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 outside Kathmandu?
Yes. Delivery is free everywhere in Nepal, with no minimum order. It is usually the same day inside Kathmandu Valley, 2 to 3 days elsewhere in Nepal, sent with Nepal Can Move. We call you to confirm the order first.
How can I pay for Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509?
Pay the full amount online to our company QR and upload the payment screenshot at checkout, or choose cash on delivery: a 50% advance by QR when ordering and the rest when it arrives.
Can I return Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509?
We don't offer refunds or change-of-mind returns, so please check the specifications or ask us before ordering. Check the package in front of the delivery person: if it's damaged or not what you ordered, take a photo and tell us the same day. A product that develops a fault is repaired or replaced under its warranty.
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