--- product_id: 156277328 title: "Dell 65WH MR90Y Battery for Inspiron 14-3421 14-3437 14-3443 14R-3421 15-3537 15-3521 15-3542 15R-5521 15R-5537, Latitude 3440 3540, Fit P/N XCMRD" brand: "dell" price: "¥9766" currency: JPY in_stock: true reviews_count: 8 url: https://www.desertcart.jp/products/156277328-dell-65wh-mr90y-battery-for-inspiron-14-3421-14-3437 store_origin: JP region: Japan --- # 11.1V high voltage Lightweight 340g design 40 WHr capacity Dell 65WH MR90Y Battery for Inspiron 14-3421 14-3437 14-3443 14R-3421 15-3537 15-3521 15-3542 15R-5521 15R-5537, Latitude 3440 3540, Fit P/N XCMRD **Brand:** dell **Price:** ¥9766 **Availability:** ✅ In Stock ## Summary > 🔋 Stay charged, stay ahead — power your hustle with Dell’s trusted battery! ## Quick Answers - **What is this?** Dell 65WH MR90Y Battery for Inspiron 14-3421 14-3437 14-3443 14R-3421 15-3537 15-3521 15-3542 15R-5521 15R-5537, Latitude 3440 3540, Fit P/N XCMRD by dell - **How much does it cost?** ¥9766 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/156277328-dell-65wh-mr90y-battery-for-inspiron-14-3421-14-3437) ## Best For - dell enthusiasts ## Why This Product - Trusted dell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Recharge & Repeat:** Rechargeable lithium-ion technology means you stay powered up and productive, day after day. - • **Light as a Feather:** At just 340 grams, this battery adds minimal bulk—perfect for the on-the-go professional. - • **Plug & Play Confidence:** Compatible with multiple Dell models including Inspiron 14 and 15 series plus Latitude 3440/3540 for seamless integration. - • **Power Through Your Day:** 40 WHr lithium-ion cells keep your Inspiron and Latitude laptops running longer without the scramble for outlets. - • **Reliable Dell Warranty:** Backed by a 1-year manufacturer warranty, ensuring peace of mind with every charge. ## Overview The Dell MR90Y is a 40 WHr, 11.1V lithium-ion 4-cell battery designed for select Inspiron and Latitude laptops. Weighing only 340 grams, it offers lightweight, reliable power backed by a 1-year warranty, ensuring your device stays energized during busy workdays and travel. ## Description Always on the go? No more worries about running out of battery power! You can power your Laptop with this 4-Cell Lithium-Ion Battery from Dell . With a capacity of up to 40 WHr, the battery lets your laptop work seamlessly when you are on the move. ## Features - Device Type : Notebook battery - Battery : Lithium ion 4-cell - 40 Wh - Manufacturer Warranty : 1-year warranty ## Technical Specifications | Specification | Value | |---------------|-------| | Antenna Location | Laptop | | Asin | B07CH21D47 | | Battery Cell Type | Lithium Ion | | Battery Weight | 0.5 Grams | | Best Sellers Rank | #15,333 in Computers & Accessories (See Top 100 in Computers & Accessories) #134 in Laptop Batteries | | Brand Name | Dell | | Customer Reviews | 3.7 3.7 out of 5 stars (670) 3.7 out of 5 stars | | Importer Contact Information | Dell | | Item Dimensions | 30 x 7.6 x 2.5 Centimeters | | Item Type Name | 40whr Battery | | Item Weight Unit Of Measure | 340 Grams | | Manufacturer | Dell, Dell | | Manufacturer Contact Information | Dell | | Model Number | MR90Y 14-3421 14-3443 15-3521 15-3543 | | Number Of Batteries | 6 Lithium Ion batteries required. | | Packer Contact Information | Dell | | Reusability | Rechargeable | | Unit Count | 1 Count | | Upc | 614144938954 | | Voltage | 11.1 Volts | | Warranty Description | 1 Year | ## Product Details - **Battery Cell Composition:** Lithium Ion - **Battery Weight:** 0.5 Grams - **Brand:** Dell - **Item Weight:** 340 Grams - **Item dimensions L x W x H:** 30 x 7.6 x 2.5 Centimeters - **Net Quantity:** 1 Count - **Number of Batteries:** 6 Lithium Ion batteries required. - **Recommended Uses For Product:** Laptop - **Reusability:** Rechargeable - **Voltage:** 11.1 Volts ## Images ![Dell 65WH MR90Y Battery for Inspiron 14-3421 14-3437 14-3443 14R-3421 15-3537 15-3521 15-3542 15R-5521 15R-5537, Latitude 3440 3540, Fit P/N XCMRD - Image 1](https://m.media-amazon.com/images/I/21QYB3XJ7yL.jpg) ## Available Options This product comes in different **Pattern Name** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ As for now it’s great value for money *by on Reviewed in India 17 August 2026* Value for money, need to analyze more ### ⭐ ⭐ 1 Star – Extremely Dangerous Product | Fire Hazard *by on Reviewed in India 26 December 2025* This is by far the worst product I have ever purchased on Amazon. I strongly warn everyone to stay away from this battery.Initially, after installing it in my laptop, it worked fine. However, after just 2–3 weeks of normal usage, a very dangerous incident occurred. One day while my laptop was charging, smoke suddenly started coming out from the battery area. Thankfully, I noticed it in time and immediately unplugged the charger.When I removed the battery (it is removable), it was extremely hot, and due to the excessive heat, it melted part of the battery casing and even damaged my laptop’s plastic body. This could have easily caused a fire or serious injury.Unfortunately, the Amazon return window had already closed. I contacted Amazon customer care, and they advised me to contact Dell since the product supposedly has a one-year warranty. I emailed and called Dell multiple times. After checking the service tag printed on the battery, Dell confirmed that this battery does NOT match their genuine product records and refused any repair or replacement.I then went back to Amazon. Over the next two months, I shared every piece of evidence they asked for—product photos, serial number images, Dell’s email denial, everything. After all this struggle, Amazon simply replied that I need to contact Dell again, sending me back to the same dead end.I have called Dell 5–6 times, and every time they raise a ticket, ask for photos, and then do nothing. No one takes responsibility. The seller is never contacted, and the customer is left helpless despite clear proof of a dangerous, faulty product.This experience has been extremely frustrating and stressful.This battery is a serious safety risk due to excessive overheating and potential fire hazard.⚠️ DO NOT BUY THIS BATTERY.It can overheat, melt, and possibly catch fire. Your laptop—and your safety—are not worth the risk. ### ⭐⭐⭐⭐⭐ Very Good *by on Reviewed in India 24 July 2026* Till up to no complaints, good ## Frequently Bought Together - DELL Original 65WHR Laptop Battery (91T8W) COMAPATIBLE INSPIRON-14-3421/37/43/21, INSPIRON-15 3537/21/42 INSPIRON-15R, INSPIRON-15R 5521 15R-5537, Latitude 3440 3540 - CARECASE® Universal 9.5mm SATA to SATA 2nd SSD HDD Hard Drive Caddy Adapter Tray Enclosures Compatible with DELL, HP, Lenovo ThinkPad, ACER Gateway, ASUS, Sony, Samsung, MSI, Laptop (for SSD and HDD) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/156277328-dell-65wh-mr90y-battery-for-inspiron-14-3421-14-3437](https://www.desertcart.jp/products/156277328-dell-65wh-mr90y-battery-for-inspiron-14-3421-14-3437) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-16*