---
product_id: 156277328
title: "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"
brand: "dell"
price: "€ 60.42"
currency: EUR
in_stock: false
reviews_count: 8
category: "Dell"
url: https://www.desertcart.gr/products/156277328-dell-original-65whr-laptop-battery-91t8w-comapatible-inspiron-14-3421
store_origin: GR
region: Greece
---

# 11.1V voltage output 40 WHr capacity 1-year manufacturer warranty 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

**Brand:** dell
**Price:** € 60.42
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power your productivity, wherever you go!

## Quick Answers

- **What is this?** 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 by dell
- **How much does it cost?** € 60.42 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/156277328-dell-original-65whr-laptop-battery-91t8w-comapatible-inspiron-14-3421)

## 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

- • **Peace of Mind Warranty:** Backed by a 1-year manufacturer warranty for trusted support and reliability.
- • **Reliable Power On-The-Go:** Keep your laptop charged with a robust 40 WHr lithium-ion battery designed for seamless mobility.
- • **Wide Compatibility Range:** Engineered to fit multiple Dell Inspiron and Latitude models, ensuring versatile use.
- • **Lightweight & Compact Design:** At just 0.88 pounds and slim dimensions, it fits perfectly without adding bulk to your device.
- • **Optimized Voltage Performance:** Delivers a steady 11.1V output to ensure consistent and efficient laptop operation.

## Overview

This Dell Original 65WHR Laptop Battery (model 91T8W) is a rechargeable 4-cell lithium-ion battery with a 40 WHr capacity and 11.1V output. Designed for select Dell Inspiron and Latitude laptops, it offers a lightweight, compact form factor and comes with a 1-year manufacturer warranty, making it a dependable choice for professionals needing reliable mobile power.

## 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.

Review: Packing and genuine product - From last two days I am using and it's working excellent. Love this product
Review: ⭐ 1 Star – Extremely Dangerous Product | Fire Hazard - This is by far the worst product I have ever purchased on desertcart. 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 desertcart return window had already closed. I contacted desertcart 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 desertcart. 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, desertcart 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.

## Features

- Device Type : Notebook battery
- Battery : Lithium ion 4-cell - 40 Wh
- Manufacturer Warranty : 1-year warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CH21D47 |
| Antenna Location | Laptop |
| Battery Cell Composition | Lithium Ion |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 0.5 Grams |
| Best Sellers Rank | #11,277 in Electronics ( See Top 100 in Electronics ) #11 in Laptop Batteries |
| Brand | Dell |
| Brand Name | Dell |
| Customer Reviews | 3.8 out of 5 stars 626 Reviews |
| Importer Contact Information | Dell |
| Item Dimensions | 30 x 7.6 x 2.5 Centimeters |
| Item Type Name | 40whr Battery |
| Item Weight Unit of Measure | 0.88 Pounds |
| Manufacturer | Dell, Dell |
| Manufacturer Contact Information | Dell |
| Model Number | MR90Y 14-3421 14-3443 15-3521 15-3543 |
| Net Quantity | 1 Count |
| Number of Batteries | 6 Lithium Ion batteries required. |
| Packer Contact Information | Dell |
| Recommended Uses For Product | Laptop |
| Reusability | Rechargeable |
| UPC | 614144938954 |
| Unit Count | 1 Count |
| Voltage | 11.1 Volts |
| Warranty Description | 1 Year |

## Product Details

- **Battery Cell Composition:** Lithium Ion
- **Battery Weight:** 0.5 Grams
- **Brand:** Dell
- **Item Weight:** 399 g
- **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 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 - Image 1](https://m.media-amazon.com/images/I/81EgontqHYL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/61Kb4C-pQyL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/61MJdvocrHL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/61tVsuPnxPL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/71zL-7NTTrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Packing and genuine product
*by A***R on 25 January 2026*

From last two days I am using and it's working excellent. Love this product

### ⭐ ⭐ 1 Star – Extremely Dangerous Product | Fire Hazard
*by V***V on 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.

### ⭐⭐⭐⭐ Genuine LGC Battery – Good Performance, Slightly Lower Capacity Than Expected
*by A***H on 1 June 2025*

I bought this battery as a replacement for my Dell Inspiron 3521, and so far it's been working well. The system recognizes it as "DELL 49VTP27J", and the manufacturer is LGC (LG Chem), which is a known OEM supplier for Dell, so that’s reassuring. Performance: Full charge capacity is 48,840 mWh, exactly as shown in the battery report. It holds charge well and performs much better than my old degraded battery (~42,000 mWh). No issues with compatibility — plug and play, works seamlessly with Windows. Note: While it's advertised as a 65 Wh battery, the actual full charge capacity is 48.84 Wh. That’s a bit misleading if you're expecting the full 65 Wh performance. No visible branding on the outside, but the system internally identifies it correctly as a Dell-compatible unit. Pros: Likely OEM-quality (manufactured by LGC) Works reliably Good improvement over my previous battery Cons: Lower actual capacity than advertised No clear mention of capacity rating on the physical battery Verdict: Overall, I’m satisfied with the battery for general daily use. Just keep in mind that while it’s reliable and likely OEM, it doesn't deliver the full 65 Wh as claimed — more like ~49 Wh. Still, a solid and affordable upgrade for older laptops.

## 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)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-09*