---
product_id: 230611803
title: "Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack"
brand: "rome tech"
price: "€ 13.78"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.sk/products/230611803-rome-tech-cr2032-cmos-battery-for-dell-latitude-e5440-e5450
store_origin: SK
region: Slovakia
---

# Long-lasting CMOS reliability 3V Lithium Ion power Wide Dell & Lenovo compatibility Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack

**Brand:** rome tech
**Price:** € 13.78
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your legacy devices with Rome Tech’s precision battery boost!

## Quick Answers

- **What is this?** Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack by rome tech
- **How much does it cost?** € 13.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/230611803-rome-tech-cr2032-cmos-battery-for-dell-latitude-e5440-e5450)

## Best For

- rome tech enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Ultra-small size with heat shrink protection fits tight spaces without overheating.
- • **Extended Battery Life:** Premium CR2032 cell ensures your BIOS settings and clock stay powered longer.
- • **Plug & Play Precision:** Fits perfectly in Dell Latitude & Lenovo ThinkPad models for seamless replacement.
- • **Effortless Installation:** Quick 10-minute swap with longer wires for flexible routing inside your laptop.
- • **Trusted Quality & Support:** Backed by Rome Tech’s 4.5-star rating and responsive customer service.

## Overview

The Rome Tech CR2032 CMOS Battery delivers reliable 3V lithium-ion power designed for Dell Latitude and Lenovo ThinkPad laptops. Its compact size and heat shrink protection ensure durability and easy installation, preserving BIOS settings and system clock with long-lasting performance. Trusted by professionals, it’s a top-ranked replacement battery with excellent customer reviews and dedicated support.

## Description

Rome Tech Lithium Coin Cell Batteries keep laptops and small electronics powered and ready. Ideal for notebooks, netbooks, laptops, portable computers, warehouse scanners, household devices, and much more. Rome Tech CMOS RTC batteries are small but effective batteries that offer long-lasting battery life coupled with safety and reliability.
Boasting high power in a small size, Rome Tech zero-mercury lithium-ion batteries are built to last and designed to perform in extreme environments. Buy a Rome Tech RTC CMOS replacement battery for home and office use.
Rome Tech CMOS batteries are simple to replace in a wide variety of laptops and netbook devices. Each battery includes an identification label so you can easily verify the authenticity and a matching connector for 100% compatibility. Housed in protective packaging, the CMOS RTC battery can be easily removed and installed without soldering or modifications.

## Features

- Rome Tech BIOS CMOS battery best suits to replace your broken or non-working old battery - we provide premium quality only
- Wide Compatibility – Works with Dell Latitude E5440, E5450, E6440, E6420, E7440, E7240, Dell AlienWare M11x R1, R2, Area-51 M9700, M9750, Lenovo ThinkPad P51, P52, P70, Yoga 15, and other laptops and mini PCs.
- Enjoy extended reliability of the CR2032 battery and heat shrink of a high caliber - the CMOS battery will last you for a long time
- The size of the entire unit is extremely small - will fit in almost any electronic device requires 3V Battery connector with 2 pins and 2 wires
- Quick and simple battery installation takes only 10 minutes of your time. Try our customer service for resolving any issues during battery replacement

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Antenna Location | Indoor/Outdoor |
| Asin | B08HB72MLM |
| Battery Capacity | 225 milliamp_hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 1 ounces |
| Best Sellers Rank | #1,911 in Computers & Accessories (See Top 100 in Computers & Accessories) #72 in Laptop Batteries |
| Brand | Rome Tech |
| Customer Reviews | 4.6 4.6 out of 5 stars (238) 4.6 out of 5 stars |
| Included Components | Battery |
| Item Weight | 68 g |
| Manufacturer | Rome Tech |
| Model Name | 22REGPN2032M |
| Model Number | 22REGPN2032M |
| Number Of Batteries | 1 C batteries required. |
| Reusability | Single Use |
| Unit Count | 1 Count |
| Upc | 308135951304 |
| Voltage | 3 volts |
| Warranty Description | 30 Days |

## Product Details

- **Battery Capacity:** 225 milliamp_hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** Rome Tech
- **Number of Batteries:** 1 C batteries required.
- **Recommended Uses For Product:** Indoor/Outdoor

## Images

![Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack - Image 1](https://m.media-amazon.com/images/I/61jHp4y-1YL.jpg)
![Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack - Image 2](https://m.media-amazon.com/images/I/51RyDJb3O-L.jpg)
![Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack - Image 3](https://m.media-amazon.com/images/I/51B6gz+pkRL.jpg)
![Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack - Image 4](https://m.media-amazon.com/images/I/51GjmLl5gJL.jpg)
![Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420 | E7440 E7240, Dell AlienWare M11x R1 R2, Area-51 M9700 M9750, Lenovo ThinkPad P51 - 1-Pack - Image 5](https://m.media-amazon.com/images/I/51wwN4BUocL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect replacement for ThinkPad T61
*by  on Reviewed in the United States August 3, 2026*

It fit perfectly in my ThinkPad T61 and works like a charm.

### ⭐⭐⭐⭐⭐ battey
*by  on Reviewed in the United States February 4, 2026*

easy to install, perfect fit, excellent functionality,

### ⭐⭐⭐⭐⭐ Works in my Latitude 7390 2-in-1
*by  on Reviewed in the United States December 18, 2024*

My Dell Latitude 7390 2-in-1 wouldn't remember the time of day. The light on the front edge blinked white and orange in the pattern which indicated bad CMOS battery. The wires on this replacement battery are longer than on the original, but there was enough room inside the case to route the excess length. Now my Latitude remembers the date and the light on the front edge doesn't blink.

## Frequently Bought Together

- Rome Tech CMOS Battery for Lenovo ThinkPad T60, T60p, T61, W500, W510 - BIOS RTC 3V CR2032 with 2 Pin 2 Wire Cable (1-Pack)
- Crucial MX500 1TB 3D NAND SATA 2.5 Inch Internal SSD, up to 560MB/s - CT1000MX500SSD1
- A-Tech 16GB (2x8GB) DDR3/DDR3L 1600MHz PC3L-12800 (PC3-12800) CL11 SODIMM 2Rx8 1.35V 204-Pin Non-ECC SO-DIMM Laptop, Notebook RAM Memory Modules

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**Shop now:** [https://www.desertcart.sk/products/230611803-rome-tech-cr2032-cmos-battery-for-dell-latitude-e5440-e5450](https://www.desertcart.sk/products/230611803-rome-tech-cr2032-cmos-battery-for-dell-latitude-e5440-e5450)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-08-15*