---
product_id: 41974977
title: "65WH MR90Y Battery Compatible with Dell Inspiron 3521 3721 5521 5721 14-3421 14-3437 14R-5421 14R-5437 17 Latitude14 3000 3540 Series XCMRD PN 0MF69 N121Y G35K4 MK1R0 VR7HM"
brand: "sle-tech"
price: "€ 59.43"
currency: EUR
in_stock: true
reviews_count: 13
category: "Sle Tech"
url: https://www.desertcart.gr/products/41974977-65wh-mr90y-battery-compatible-with-dell-inspiron-3521-3721-5521
store_origin: GR
region: Greece
---

# 6-cell fast charge tech 65WH high-capacity power Built-in circuit protection 65WH MR90Y Battery Compatible with Dell Inspiron 3521 3721 5521 5721 14-3421 14-3437 14R-5421 14R-5437 17 Latitude14 3000 3540 Series XCMRD PN 0MF69 N121Y G35K4 MK1R0 VR7HM

**Brand:** sle-tech
**Price:** € 59.43
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay powered, stay ahead — never miss a beat with SLE-TECH!

## Quick Answers

- **What is this?** 65WH MR90Y Battery Compatible with Dell Inspiron 3521 3721 5521 5721 14-3421 14-3437 14R-5421 14R-5437 17 Latitude14 3000 3540 Series XCMRD PN 0MF69 N121Y G35K4 MK1R0 VR7HM by sle-tech
- **How much does it cost?** € 59.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/41974977-65wh-mr90y-battery-compatible-with-dell-inspiron-3521-3721-5521)

## Best For

- sle-tech enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Recharge Ready:** 6-cell Li-ion design ensures faster charging and longer runtime.
- • **Safety First, Always:** Integrated circuit protection guarantees stable, worry-free performance.
- • **Plug & Play Confidence:** Easy installation with zero hassle—get back to work instantly.
- • **Power Through Your Day:** 65WH capacity delivers extended unplugged productivity for busy pros.
- • **Seamless Compatibility:** Perfect fit for a wide range of Dell Inspiron & Latitude 3000 series models.

## Overview

The SLE-TECH 65WH MR90Y is a premium-grade Li-ion replacement battery designed for Dell Inspiron and Latitude 3000 series laptops. Featuring a robust 65WH capacity and 6-cell configuration, it offers extended battery life and fast charging. Built-in circuit protection ensures safety and stability, while its precise compatibility guarantees a perfect fit and hassle-free installation. Ideal for professionals seeking reliable, long-lasting power on the go.

## Description

desertcart.com: SLE-TECH 65WH MR90Y Battery Compatible with Dell Inspiron 3521 3721 5521 5721 14-3421 14-3437 14R-5421 14R-5437 17 Latitude14 3000 3540 Series XCMRD PN 0MF69 N121Y G35K4 MK1R0 VR7HM : Electronics

Review: Excellent replacement laptop battery - I bought this battery for my laptop as a replacement, and so far it has exceeded my expectations. Installation was simple and it fit perfectly, without needing any additional adjustments. Since I started using it, the battery life has been excellent, allowing me to work for several hours without being plugged in. The laptop feels stable, doesn't overheat, and the performance is the same as, or even better than, the original battery. Furthermore, the charging time is reasonable, and it maintains a consistent power level. Overall, it's an excellent option if you need to replace your laptop battery. Good quality, good performance, and a very recommendable price-quality ratio. I would definitely buy it again.
Review: Good quality - Works very well

## Features

- Battery type: Li-ion; Capacity: 65WH; Cells: 6-cell; Voltage: 11.1V.
- Replacement Models: Dell XCMRD MR90Y battery;Dell Inspiron 14 3421 / 14r 5421 / 14r /3437 /5437 /N3421 /N5421 15 3521 / 15r /3537 /5537 /N3521 /N5521 /N5537 / 17 3721 / 17r /5737 /N3721 /N3737 /N5721 /N5737 17r 5721 / 15r 5521 laptop battery
- Compatible Part Numbers 0MF69 312-1390 49VTP 68DTP 6KP1N 8TT5W FW1MN MK1R0 PVJ7J V8VNT X29KD YGMTN 24DRM 312-1392 4DMNG 6HY59 6XH00 9K1VP G019Y MR90Y T1G4M VR7HM XCMRD 312-1387 312-1433 4WY7C 6K73M 8RT13 DJ9W6 G35K4 N121Y V1YJ7 W6XNM XRDW2 battery
- Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XPCS5BK |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #23,179 in Electronics ( See Top 100 in Electronics ) #170 in Laptop Batteries |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,780) |
| Date First Available | March 17, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 12.6 ounces |
| Item model number | MR90Y |
| Manufacturer | DongGuan Simer Electronics Co., LTD |
| Package Dimensions | 11.81 x 2.91 x 1.26 inches |

## Product Details

- **Battery Capacity:** 65 Watt Hours
- **Battery Cell Composition:** Lithium Metal
- **Brand:** SLE-TECH
- **Number of Batteries:** 1 Lithium Ion batteries required.
- **Recommended Uses For Product:** Laptop

## Images

![65WH MR90Y Battery Compatible with Dell Inspiron 3521 3721 5521 5721 14-3421 14-3437 14R-5421 14R-5437 17 Latitude14 3000 3540 Series XCMRD PN 0MF69 N121Y G35K4 MK1R0 VR7HM - Image 1](https://m.media-amazon.com/images/I/61t6LqZMXHL.jpg)

## Available Options

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

## Questions & Answers

**Q: dose the battery fall out of a dell inspiron 15 3521**
A: No, this battery fit fine. It does not fall out. Very satisfied with mine.

**Q: Will this fit the Inspiron 5535?**
A: Check on the reverse of the battery if it says MR90Y, if it says that, the battery will fit your laptop.

**Q: My battery is not working and it stopped working outside the return window. Can I get a replacement for my battery?**
A: No, there is no way to contact them despite stating that they have a one year “warranty” mine dies after just under 6 months and I have no way to contact them (warranty link on Amazon leads to a blank page) even though it is still allegedly under warranty.

**Q: Is useful for dell 3542?**
A: yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent replacement laptop battery
*by M***Z on January 21, 2026*

I bought this battery for my laptop as a replacement, and so far it has exceeded my expectations. Installation was simple and it fit perfectly, without needing any additional adjustments. Since I started using it, the battery life has been excellent, allowing me to work for several hours without being plugged in. The laptop feels stable, doesn't overheat, and the performance is the same as, or even better than, the original battery. Furthermore, the charging time is reasonable, and it maintains a consistent power level. Overall, it's an excellent option if you need to replace your laptop battery. Good quality, good performance, and a very recommendable price-quality ratio. I would definitely buy it again.

### ⭐⭐⭐⭐⭐ Good quality
*by K***E on November 9, 2025*

Works very well

### ⭐⭐⭐⭐⭐ Works Great!
*by D***N on August 8, 2025*

Just perfect. Perfect fit.. perfect charge and was powered enough to use immediately. Arrived a day early. Great Seller and I highly recommend.

## Frequently Bought Together

- SLE-TECH 65WH MR90Y Battery Compatible with Dell Inspiron 3521 3721 5521 5721 14-3421 14-3437 14R-5421 14R-5437 17 Latitude14 3000 3540 Series XCMRD PN 0MF69 N121Y G35K4 MK1R0 VR7HM
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**Shop now:** [https://www.desertcart.gr/products/41974977-65wh-mr90y-battery-compatible-with-dell-inspiron-3521-3721-5521](https://www.desertcart.gr/products/41974977-65wh-mr90y-battery-compatible-with-dell-inspiron-3521-3721-5521)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-14*