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Techie compatible for Dell Inspiron 15 3521, Inspiron 17R 5721, Latitude 3440, Vostro 3445 laptop battery (4 Cell).

(47 customer reviews)


SKU 3521 / 5421 4C Categories ,
  • Capacity: 2200 mAh | Voltage: 14.8 V | Number of cells: 4 | 12-month warranty.
  • Laptop battery approved by Bureau of Indian Standards.
  • Quality product – 100% compatible with your laptop, identical size, including all electronic safety measures.
  • Our batteries are designed for maximum safety: Overheat, Short-circuit, and overload protection, together with CE/RoHS certifications.

In stock

Return : 15 Days

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with COD & reliable return policy

Hassle-free replacement

15-days easy replacement & refund


Techie compatible for Dell Inspiron 15 3521, Inspiron 17R 5721, Latitude 3440, Vostro 3445 laptop battery.

Battery Ratings: Li-ion, Capacity: 2200mAh, Cell: 4, Voltage: 14.8V

Compatible part numbers (p/ns):

  • Dell 0MF69
  • Dell 24DRM
  • Dell 312-1387
  • Dell 312-1390
  • Dell 312-1392
  • Dell 312-1433
  • Dell 49VTP
  • Dell 4DMNG
  • Dell 4WY7C
  • Dell 68DTP
  • Dell 6HY59
  • Dell 6K73M
  • Dell 6KP1N
  • Dell 6XH00
  • Dell 8RT13
  • Dell 8TT5W
  • Dell 9K1VP
  • Dell DJ9W6
  • Dell FW1MN
  • Dell G019Y
  • Dell G35K4
  • Dell MK1R0
  • Dell MR90Y
  • Dell N121Y
  • Dell PVJ7J
  • Dell T1G4M
  • Dell V1YJ7
  • Dell VR7HM
  • Dell W6XNM
  • Dell X29KD
  • Dell XRDW2
  • Dell YGMTN
  • Dell V8VNT
  • Dell XCMRD

Compatible Laptop Model:

  • Dell Inspiron 14 3421
  • Dell Inspiron 14R 5421
  • Dell Inspiron 15 3521
  • Dell Inspiron 15R 5521
  • Dell Inspiron 17 3721
  • Dell Inspiron 17R 5721
  • Dell Latitude 2421
  • Dell Latitude 2521
  • Dell Latitude 3440
  • Dell Latitude 3540
  • Dell Latitude 3721
  • Dell Latitude 3737
  • Dell Latitude 5437
  • Dell Latitude 5537
  • Dell Latitude 5737
  • Dell Vostro 2421
  • Dell Vostro 2521
  • Dell Vostro 3445
  • Dell Vostro 3446
  • Dell Vostro 3546
  • Dell Inspiron 3442
  • Dell Inspiron 15 3542
  • Dell inspirion 15 3543

NOTE: Please check above battery part number (P/N) from the label of existing battery. If your laptop’s battery part number is not listed here, feel free to contact us at 8088242424 our team will help you to decide which battery will be suitable for your laptop.

Additional information

2200 mAh



Number of cells


Cells technology


Over charge protection


Over discharge protection





12 months

Reviews (47)

47 reviews for Techie compatible for Dell Inspiron 15 3521, Inspiron 17R 5721, Latitude 3440, Vostro 3445 laptop battery (4 Cell).

Based on 47 reviews
5 star
4 star
3 star
2 star
1 star
Showing 8 of 47 reviews (4 star). See all 47 reviews
  1. Madhu Sudan Gopal Das (verified owner)

    fast delivery and product is as descirbed.

  2. Rahul Velloth (verified owner)

    Good compatible battery. It works well with my laptop. But the backup time is around 3 to 4 hours only.. It’s okey.. thanks Techies for providing this compatible battery.

    Delivery takes more time than we expect. Rest all okey..

  3. Nishant Teotia (verified owner)

    Very nice delivery service.

  4. Priya (verified owner)

    I honestly had a doubt about how the product would be, still I gave it a try. The battery is working really good as of now. Thank you techie store. Though the delivery was one day beyond the stipulated date, the delivery boy was so irritating, we even had a quarrel, because he travelled about half kilometre more and didn’t find my address, so when he finally came with the package he just poured that frustration on me. It was he who made the mistake and he tried to place it on me. Isn’t it kinda normal that they’ll get the address wrong or will have to roam lil more, well even if I argued with him, I was so dejected. In future pls make sure that these delivery boys are lil more patient. Apart from that, the experience with you techie store was really good😊

  5. Joby (verified owner)


  6. Michael Pereira (verified owner)

    Happy with the product and service provided. Hope it meets my requirements.

  7. Sharath KS (verified owner)

    Good one

  8. jaya prakash (verified owner)

    it’s really good . As i didn’t hear about the site before, i orderd going through the reviews , product deliverd timely & after using 10 days giving this review , i am fully content with the product and surely recommend to those looking for compatibility battery.. the battery giving backup of 2 hours 30mins ………………..

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Frequently Asked Questions

Techie tries to ship your orders on the same day. After the order is confirmed the tracking link is sent on the registered email which includes the live location of the package and the estimate delivery time.


Your satisfaction is guaranteed when you order from Techie! If you decide not to use a product or find an issue in products, simply generate a return/replacement request within 15 days of delivery to get a replacement or refund.


We offer multiple online payment methods, including:

1. Credit Card and Debit Card
2. Net Banking
3. Wallet (Paytm, Phone pe, Mobikwik, FreeCharge, Airtel Money, Ola Money, Jio Money and PayZapp)
4. UPI
5. Cash on Delivery 

We do offer cash on delivery with extra COD fees of Rs.100 (Non-Refundable*)

Techie warrants our products against defects in materials and working for the warranty period from the date of purchase. The warranty period is for 1-year on laptop battery, laptop charger, barcode and power bank.


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3521 / 5421 4 cell Battery

Techie compatible for Dell Inspiron 15 3521, Inspiron 17R 5721, Latitude 3440, Vostro 3445 laptop battery (4 Cell).


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Return : 15 Days

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