---
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: "€ 56.41"
currency: EUR
in_stock: true
reviews_count: 8
category: "Dell"
url: https://www.desertcart.fi/products/156277328-dell-original-65whr-laptop-battery-91t8w-comapatible-inspiron-14-3421
store_origin: FI
region: Finland
---

# 11.1V Voltage Output 1-Year Manufacturer Warranty 40 Whr Lithium-Ion Power 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:** € 56.41
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your productivity, wherever ambition takes you.

## 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?** € 56.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/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

- • **Backed by Warranty:** 1-year manufacturer warranty ensures peace of mind for your investment.
- • **Long-Lasting Power:** 40 Whr capacity keeps your laptop running through busy workdays and travel.
- • **Reliable OEM Quality:** Crafted by LG Chem, trusted Dell supplier for seamless compatibility.
- • **Lightweight & Compact:** Weighs just 399g with slim 30x7.6x2.5 cm design for on-the-go professionals.
- • **Plug & Play Convenience:** Effortless installation with full Windows recognition—no tech hassle.

## Overview

This Dell Original 65WHR Laptop Battery (model 91T8W) is a genuine LG Chem-manufactured 4-cell lithium-ion battery delivering reliable 40 Whr capacity at 11.1 volts. Compatible with multiple Inspiron and Latitude models, it offers plug-and-play ease with Windows systems, weighs just under 400 grams, and comes with a 1-year manufacturer warranty—perfect for professionals needing dependable 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: Original product - Original product
Review: Genuine LGC Battery – Good Performance, Slightly Lower Capacity Than Expected - 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.

## Features

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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CH21D47 |
| Batteries | 6 Lithium Ion batteries required. |
| Batteries Included | No |
| Batteries Required | No |
| Battery Description | lithium-ion |
| Battery cell composition | Lithium Ion |
| Best Sellers Rank | #12,107 in Electronics ( See Top 100 in Electronics ) #13 in Laptop Batteries |
| Brand | Dell |
| Compatible Devices | Laptop |
| Customer Reviews | 3.8 3.8 out of 5 stars (618) |
| Date First Available | 24 August 2018 |
| Generic Name | 40whr Battery |
| Hardware Platform | Windows |
| Importer | Dell |
| Item Dimensions LxWxH | 30 x 7.6 x 2.5 Centimeters |
| Item Weight | 399 g |
| Item model number | MR90Y 14-3421 14-3443 15-3521 15-3543 |
| Manufacturer | Dell |
| Model | MR90Y 14-3421 14-3443 15-3521 15-3543 |
| Net Quantity | 1 Count |
| Number of items | 1 |
| Packer | Dell |
| Power Source | battery powered |
| Product Dimensions | 30 x 7.6 x 2.5 cm; 399.16 g |
| Voltage | 11.1 Volts |

## 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Original product
*by V***H on 9 January 2026*

Original product

### ⭐⭐⭐⭐ 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.

### ⭐ ⭐ 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.

## 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 Finland*
*Store origin: FI*
*Last updated: 2026-02-18*