---
product_id: 132619845
title: "– Battery for Dell MR90Y XCMRD Inspiron 3521 15-3521 15R-5537 15-3531 15R-5521 15-3537 15-3542 17-3721 17R-5721 3531 5421 Latitude 3440 3540 312-1387 4DMNG V8VNT FW1MN - 6 Cells/4400mAh"
brand: "ninjabatt"
price: "A$92"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/132619845-battery-for-dell-mr90y-xcmrd-inspiron-3521-15-3521-15r
store_origin: AU
region: Australia
---

# 11.1V stable power output 4400mAh high capacity Advanced multi-layer safety – Battery for Dell MR90Y XCMRD Inspiron 3521 15-3521 15R-5537 15-3531 15R-5521 15-3537 15-3542 17-3721 17R-5721 3531 5421 Latitude 3440 3540 312-1387 4DMNG V8VNT FW1MN - 6 Cells/4400mAh

**Brand:** ninjabatt
**Price:** A$92
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your productivity with confidence—never miss a beat!

## Quick Answers

- **What is this?** – Battery for Dell MR90Y XCMRD Inspiron 3521 15-3521 15R-5537 15-3531 15R-5521 15-3537 15-3542 17-3721 17R-5721 3531 5421 Latitude 3440 3540 312-1387 4DMNG V8VNT FW1MN - 6 Cells/4400mAh by ninjabatt
- **How much does it cost?** A$92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/132619845-battery-for-dell-mr90y-xcmrd-inspiron-3521-15-3521-15r)

## Best For

- ninjabatt enthusiasts

## Why This Product

- Trusted ninjabatt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Engineered for Safety:** Built-in protections guard against short circuits, overheating, and overloads for peace of mind.
- • **Power That Keeps You Going:** 4400mAh capacity delivers reliable all-day laptop performance without compromise.
- • **OEM-Level Quality Assurance:** Tested to meet Dell’s exacting standards, ensuring seamless compatibility and longevity.
- • **Durability Meets Performance:** Grade A cells rated for up to 500 charge cycles keep your workflow uninterrupted.
- • **Confidence Backed by Warranty:** 12-month warranty guarantees your investment is protected—no more battery anxiety.

## Overview

This premium 6-cell 4400mAh Li-ion replacement battery is designed for Dell Inspiron and Latitude models, delivering OEM-level performance and safety. Featuring advanced protections and durable grade A cells, it ensures up to 500 charge cycles and comes with a 12-month warranty for reliable, long-lasting laptop power.

## Description

Battery for Dell MR90Y XCMRD Inspiron 3521 15-3521 15R-5537 15-3531 15R-5521 15-3537 15-3542 17-3721 17R-5721 3531 5421 Latitude 3440 3540 312-1387 4DMNG V8VNT FW1MN - 6 Cells/4400mAh

## Features

- PREMIUM QUALITY REPLACEMENT NOTEBOOK BATTERY: Bring your laptop back to life with Ninjabatt's high quality laptop battery - Made of high quality materials, top grade battery cells and packed with safety features.
- TRUE CHARGING CAPACITY THAT LASTS: Every one of four replacement notebook batteries are tested to meet OEM specifications. Our 6 cells Li-ion battery is rated at 49wH/4400mAh/11.1V - true charge capacity that won’t let you or your laptop down.
- SAFETY FIRST: Don’t fall into buying cheap and unsafe batteries, our Dell batteries are certified for safety and packed with a variety of safety features, including short circuit, overheat, and overload protections
- HIGH QUALITY COMPONENTS & 12 MONTH WARRANTY: Our Laptop batteries are assembled from top quality material and circuit boards to ensure durability and performance. We only use grade A battery cells that provide up to 500 charging cycles. We’re so confident in the performance of our replacement laptop batteries that we’re including a 12-month warranty with every single purchase.
- COMPATIBLE MODELS: 0MF69 | 24DRM | 312-1387 | 312-1433 | 451-12107 | 4DMNG | 4WY7C | FW1MN | MR90Y | N121Y | V8VNT | XCMRD | Inspiron 14R 5437 | 15 3521 | 15 3531 | 15 3537 | 15 3541 | 15 3542 | 15 5521 | 15 N3521 | 15R 3521 | 15R 5521 | 15R 5537 | 15R N3521 | 17 3721 | 17 3737 | 17 5721 | 17 N3721 | 17 N5721 | 17R 3721 | 17R 5721 | 17R 5737 | 17R N3721 | 17R N5721 | 3421 | 3521 | 3531 | 3721 | 5421 | 5521 | M531R-5535 | Latitude 3204 | 3440 | 3540 | Vostro 2421 | 2521

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06WVMC1VN |
| Batteries | 1 Product Specific batteries required. (included) |
| Best Sellers Rank | #109,215 in Electronics ( See Top 100 in Electronics ) #2,108 in Laptop Batteries |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,365) |
| Date First Available | November 19, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 14.8 ounces |
| Item model number | MR90Y |
| Manufacturer | Guangdong Greenway Technology Co.,Ltd |
| Product Dimensions | 12 x 3 x 4 inches |

## Product Details

- **Number of batteries:** 1 Product Specific batteries required. (included)
- **Brand:** NinjaBatt
- **Battery cell composition:** Lithium Ion
- **Battery capacity:** 4400 Milliamp Hours
- **Recommended uses for product:** Laptop

## Images

![– Battery for Dell MR90Y XCMRD Inspiron 3521 15-3521 15R-5537 15-3531 15R-5521 15-3537 15-3542 17-3721 17R-5721 3531 5421 Latitude 3440 3540 312-1387 4DMNG V8VNT FW1MN - 6 Cells/4400mAh - Image 1](https://m.media-amazon.com/images/I/71RDhCCUgvL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Questions & Answers

**Q: may I know the standby hours please?**
A: At least 3 hours on full charge

**Q: Dell batteries have elecronics to prove they are from Dell and the computer will tell you this when it boots up.  Is this product truly compatible ?**
A: DO NOT BUY
Battery stopped working after 3 months.

**Q: Does this fit fell Inspiron 3537?**
A: My laptop is the Inspiron 14R 5437

## Customer Reviews

### ⭐⭐⭐⭐⭐ Decent value for money and as a non-OEM part, it fit like a glove
*by M***T on 27 April 2023*

The shape of the battery is slightly thicker in this non-OEM part, but that is used to a good effect, as it angles the keyboard, ever so slightly up, at the back, probably no more than 5mm(ish!) and so I wasn't too fussed about that.I had read reviews about other batteries not fitting well and discarded those from my purchase plan, settling for this battery that had positive reviews that I found to be accurate and beneficial.The battery came partially charged (to about 80%) and it didn't take long to get that to 100% before I started using it. From there I used my laptop for about 60-70 minutes and when I checked it before shutting down, it was at 94% with a suggested 8 more hours of use.I appreciate that new battery cells hold their charge for longer than the OEM one I'd had for about 6-7 years (Dell's battery, REALLY lasted well, in my opinion) and time will tell if this remains to be a solid purchase.Worthy of your consideration and a strong 5 stars at the start.

### ⭐⭐⭐⭐⭐ Good price. Fit spot on for Inspiron 3537.
*by H***0 on 16 March 2025*

Working well. No issues so far!

### ⭐⭐⭐⭐ Good product but could be cheaper
*by S***A on 30 May 2020*

4 stars (one less) because of the price. Otherwise a good product

## Frequently Bought Together

- NinjaBatt XCMRD MR90Y Battery for Dell Inspiron 15 3000 Series 3521 3537 3541 3542 3543 3531 17 3721 3737 17R-5737 15R 5537 5521 14 3421 5421 Latitude 3540 3440 FW1MN - High Performance [6 Cells/49Wh]
- SAMSUNG 870 EVO SATA III SSD 1TB 2.5” Internal Solid State Drive, Upgrade PC or Laptop Memory and Storage for IT Pros, Creators, Everyday Users, MZ-77E1T0B/AM
- Crucial RAM 16GB Kit (2x8GB) DDR3 1600 MHz CL11 Laptop Memory CT2KIT102464BF160B

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-11*