--- product_id: 106749262 title: "Replacement CMOS Battery for DELL Latitude D620 D630 D810 D830 E6420 E6430 E6520 E6530 E6540|Latitude 5480/5490,5470, 7470, 7480/7490, 7280/7290, 7390|N4050 E7270 M4600" brand: "lefix" price: "€ 15.30" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.pt/products/106749262-replacement-cmos-battery-for-dell-latitude-d620-d630-d810-d830 store_origin: PT region: Portugal --- # 3V direct current voltage 220mAh Lithium Manganese Dioxide power Tested for quality before shipping Replacement CMOS Battery for DELL Latitude D620 D630 D810 D830 E6420 E6430 E6520 E6530 E6540|Latitude 5480/5490,5470, 7470, 7480/7490, 7280/7290, 7390|N4050 E7270 M4600 **Brand:** lefix **Price:** € 15.30 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your productivity—never miss a beat with LeFix! ## Quick Answers - **What is this?** Replacement CMOS Battery for DELL Latitude D620 D630 D810 D830 E6420 E6430 E6520 E6530 E6540|Latitude 5480/5490,5470, 7470, 7480/7490, 7280/7290, 7390|N4050 E7270 M4600 by lefix - **How much does it cost?** € 15.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/106749262-replacement-cmos-battery-for-dell-latitude-d620-d630-d810-d830) ## Best For - lefix enthusiasts ## Why This Product - Trusted lefix brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Tested:** Each battery undergoes rigorous quality checks to guarantee peak performance. - • **Reliable Power Boost:** 220mAh capacity ensures your Dell Latitude stays energized and ready. - • **Plug & Play Simplicity:** 2-pin, 2-wire connector for hassle-free installation and instant power restoration. - • **Seamless Compatibility:** Fits a wide range of Dell Latitude and XPS models for ultimate convenience. - • **Ultra-Lightweight Design:** At just 4 grams, it adds zero bulk while delivering maximum efficiency. ## Overview The LeFix Replacement CMOS Battery is a high-quality, rechargeable lithium manganese dioxide battery with 220mAh capacity and 3V output, designed specifically for a broad range of Dell Latitude and XPS laptops. Lightweight and rigorously tested, it ensures reliable BIOS power backup, extending your device’s lifespan and maintaining system settings flawlessly. ## Description Compatible Machine List For AW M18x, M18xR2, 14 R1, 18 R1, 13, 17 R2, 15 R1, 15 R2, 17 R3, 13 R2, 15 R3, 17 R4 For Chromebook 13 (7310) For Inspiron 15 (7559), 15 (7577), 9400, 9300, 9200 For Latitude E6520, E6420, E6320, XFR E6420, ATG E6420, E5530, E6230, E5430, E6530, E6430, ATG E6430, E7240, E7440, E6540, E6440, E5440, E5540, E5250, 3550, E7250, E7450, E5450, E5550, E5570, E5470, E7270, E7470, 5580, 7480, 5480, 7280, 13 (3380), 3189, 7490, 5590, 5490, 7400, 5500, 7300, 5501, 5400, D830, D820, D810, D630, D620 For XPS Studio XPS 1640, Studio XPS 1645, XPS 15 (9530) For Precision M6600, M4600, M4700, M6700, M4800, M6800, M3800, 15 (7510), 3520, 3541 For ASUS Edge R SBCs ## Features - Brand New and High Quality - Compatible with Dell Latitude D620 D630 D810 D830 E6430 E6520 E6530 N4050 E7270 - Connector:2 pins and 2 wires - Each item is tested before shipping ## Technical Specifications | Specification | Value | |---------------|-------| | Antenna Location | Laptop | | Asin | B07P3T9S3K | | Battery Capacity | 220 amp_hours | | Battery Cell Type | Lithium Manganese Dioxide | | Battery Weight | 4 g | | Best Sellers Rank | #9,200 in Computers & Accessories (See Top 100 in Computers & Accessories) #410 in Laptop Batteries | | Brand | LeFix | | Compatible Phone Models | For Computer System | | Customer Reviews | 4.6 4.6 out of 5 stars (619) 4.6 out of 5 stars | | Item Dimensions | 2.56 x 0.79 x 0.13 inches | | Manufacturer | LeFix | | Model Name | d620 | | Number Of Batteries | 1 CR2 batteries required. (included) | | Reusability | Rechargeable | | Unit Count | 1 Count | | Upc | 655160981852 | | Voltage | 3 volts_of_direct_current | ## Product Details - **Battery Capacity:** 220 amp_hours - **Battery Cell Composition:** Lithium Manganese Dioxide - **Brand:** LeFix - **Number of Batteries:** 1 CR2 batteries required. (included) - **Recommended Uses For Product:** Laptop ## Images ![Replacement CMOS Battery for DELL Latitude D620 D630 D810 D830 E6420 E6430 E6520 E6530 E6540|Latitude 5480/5490,5470, 7470, 7480/7490, 7280/7290, 7390|N4050 E7270 M4600 - Image 1](https://m.media-amazon.com/images/I/51cNwuhl9LL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very easy to install and works 👍 *by on Reviewed in the United States June 25, 2025* My computer suddenly died and wouldn't even properly boot into the BIOS. I was terrified that my computer finally died — it's an older 2017 Inspiron 15 gaming model. I have changed the HDD to an SSD and it's breathed new life into it, but it’s still old and at risk of succumbing to its age.When I looked up the blinking LED that is in front of the computer's base and what the pattern indicated, it turned out to be the CMOS battery failing. I decided it was better than nothing to attempt to replace it and see if that was the real issue.It was. Unfortunately, there was an issue with the BIOS not booting Windows correctly, but that was not because of this battery, but due to the fact that the battery before it had died and ruined the prexisting settings.Installing this battery was a breeze. I had no issues with the process, and the battery fit in the clip my laptop has just fine. I recommend this. ### ⭐⭐⭐⭐⭐ It Worked *by on Reviewed in the United States July 31, 2026* What can I say, it fit as advertised, fixed the laptop. ### ⭐⭐⭐⭐⭐ Good replacement for Latitude 7290. Nice that it has the sticky pad attached to the back side. *by on Reviewed in the United States June 10, 2026* Looks like good quality. It has a stick on pad on the back side which is good to hold it in place (remove protective peel before sticking it down). Wire is slightly longer than stock but not an issue. Works fine as expected. ## Frequently Bought Together - LeFix Replacement CMOS Battery for DELL Latitude D620 D630 D810 D830 E6420 E6430 E6520 E6530 E6540|Latitude 5480/5490,5470, 7470, 7480/7490, 7280/7290, 7390|N4050 E7270 M4600 - 60WH T54FJ Laptop Battery for Latitude E6440 E6430 E6420 E6520 E6530 E6540 E5430 E5520 E5530 E5420 Inspiron 4420 4520 4720 5420 5520 5720 7420 7520 7720 M421R M521R Vostro 3460 3560 M5Y0X N3X1D 8858X - Timetec 16GB KIT(2x8GB) DDR3L/DDR3 1600MHz(DDR3L-1600) PC3L-12800 Non-ECC Unbuffered 1.35V/1.5V CL11 2Rx8 Dual Rank 204 Pin SODIMM Laptop Notebook RAM --- ## 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.pt/products/106749262-replacement-cmos-battery-for-dell-latitude-d620-d630-d810-d830](https://www.desertcart.pt/products/106749262-replacement-cmos-battery-for-dell-latitude-d620-d630-d810-d830) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-14*