
Dell M5Y1K Original Laptop Battery
40Wh · 14.8V · 2700mAh · 4-Cell Li-ion
Save Rs. 500
Choose the Dell M5Y1K Original for the longer warranty (1 year), and to save Rs. 1,000.
Compare Dell M5Y1K Original and Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509, both in the Accessories category at Proud Nepal IT Suppliers in Nepal, on price, specifications, warranty and availability. Dell M5Y1K Original is listed at Rs. 3,500 and Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 at Rs. 4,500. Dell M5Y1K Original has the longer warranty (1 year vs 6 months). The table below shows every specification side by side.

40Wh · 14.8V · 2700mAh · 4-Cell Li-ion
Save Rs. 500
1 year warranty
View Dell M5Y1K OriginalPrices and availability may change; the product pages always show the current ones.
| Specification | Dell M5Y1K Original Laptop Battery | Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 |
|---|---|---|
| Price | Rs. 3,500 | Rs. 4,500 |
| Brand | DELL | ASUS |
| Availability | In stock | In stock |
| Warranty | 1 year (distributor warranty) | 6 months (proud nepal warranty) |
| Product Type | Laptop Battery | Laptop Battery |
| Model | M5Y1K | B21N1818-3 |
| Color | Black | – |
| Compatible Laptop Models | 3451, 3452, 3458, 3459, 5451, 5455, 5458, 5459; 3551, 3552, 3558, 3559, 5551, 5552, 5555, 5558, 5559; 5755, 5758; 3458, 3558; 3460, 3560 | 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 | M5Y1K, GXVJ3, HD4J0, K185W, WKRJ2, VN3N0, 78V9D, 07G07, 991XP, 1KFH3 | B21N1818 |
| Chemistry | Lithium-Ion | Li-polymer |
| Nominal Voltage | 14.8V | 7.6V |
| Capacity mAh | 2700mAh | 4212mAh |
| Capacity Wh | 40Wh | 32Wh |
| Cell Count | 4 Cells | 2 Cells |
| Internal / External | Removable | Internal |
| Part number | – | B21N1818-3 |
Dell M5Y1K Original costs Rs. 3,500 at Proud Nepal IT Suppliers (offer price; regular price Rs. 4,000), with free delivery within Kathmandu Valley.
Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 costs Rs. 4,500 at Proud Nepal IT Suppliers (offer price; regular price Rs. 5,000), with free delivery within Kathmandu Valley.
Dell M5Y1K Original has the lower listed price (Rs. 3,500 vs Rs. 4,500), a difference of Rs. 1,000. Model: Dell M5Y1K Original has M5Y1K; Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 has B21N1818-3. Chemistry: Dell M5Y1K Original has Lithium-Ion; Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 has Li-polymer. Nominal Voltage: Dell M5Y1K Original has 14.8V; Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 has 7.6V.
Dell M5Y1K Original has the lower listed price (Rs. 3,500 vs Rs. 4,500), a difference of Rs. 1,000.
Dell M5Y1K Original has the longer warranty (1 year vs 6 months).
Dell M5Y1K Original comes with 1 year warranty. Keep the bill, the box and the serial-number sticker for claims.
Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 comes with 6 months warranty. Keep the bill, the box and the serial-number sticker for claims.
Dell M5Y1K Original is in stock and Replacement Battery B21N1818-3 for ASUS VivoBook 14 X409 / 15 X509 is in stock at Proud Nepal IT Suppliers, Putalisadak, Kathmandu. Order online or visit the store; stock changes daily.
Yes, all over Nepal. Delivery is free within Kathmandu Valley, with no minimum order; elsewhere in Nepal, delivery charges may apply depending on your location and are confirmed when we call to confirm the order. Delivery takes the same day inside Kathmandu Valley, 2 to 3 days elsewhere in Nepal, sent with Nepal Can Move.
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.

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