--- product_id: 56206646 title: "New CMOS BIOS RTC Battery for Dell Optiplex 740, 745, 755, 760 computers" brand: "other" price: "€ 20.59" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.pt/products/56206646-new-cmos-bios-rtc-battery-for-dell-optiplex-740-745 store_origin: PT region: Portugal --- # Long-lasting CMOS backup Reliable power retention Same day postage New CMOS BIOS RTC Battery for Dell Optiplex 740, 745, 755, 760 computers **Brand:** other **Price:** € 20.59 **Availability:** ✅ In Stock ## Summary > ⚡ Power your Dell Optiplex with confidence—never lose your BIOS settings again! ## Quick Answers - **What is this?** New CMOS BIOS RTC Battery for Dell Optiplex 740, 745, 755, 760 computers by other - **How much does it cost?** € 20.59 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/56206646-new-cmos-bios-rtc-battery-for-dell-optiplex-740-745) ## Best For - other enthusiasts ## Why This Product - Trusted other brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Delivery:** Same day postage ensures you’re back up and running in no time. - • **Instant Power Backup:** Keep your Dell Optiplex BIOS settings intact without interruption. - • **Seamless Compatibility:** Specifically engineered for Dell Optiplex 740, 745, 755, and 760 models. - • **Essential for Stability:** Prevents BIOS data loss, securing your system’s startup and configuration. - • **Maintenance-Free Reliability:** No batteries included means fresh, long-lasting power every time you install. ## Overview This CMOS BIOS RTC battery is a precision replacement designed for Dell Optiplex 740, 745, 755, and 760 desktops. It ensures reliable retention of BIOS settings and real-time clock data, preventing system errors and boot issues. With same day postage, it offers fast delivery to minimize downtime and keep your professional workflow uninterrupted. ## Description ## Features - Same day postage ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Other | | Manufacturer | Technical Progress | | Are Batteries Included | No | | Guaranteed software updates until | unknown | ## Product Details - **Brand:** Other - **Battery capacity:** 4400 Milliamp Hours - **Unit count:** 1 Count - **Reusability:** Rechargeable - **Compatible phone models:** 745, 760 computers, Dell Opti ## Images ![New CMOS BIOS RTC Battery for Dell Optiplex 740, 745, 755, 760 computers - Image 1](https://m.media-amazon.com/images/I/31ovavJmVRL.jpg) ## Questions & Answers **Q: Do bios batteries have to be rechargeable ?** A: Look at the existing battery in your Dell Optiplex. As I understand it, If it is marked CR 2032, it is a normal non-rechargeable battery. If it is marked ML 2032, then it is rechargeable. Mine was a CR 2032 in my Optiplex 740. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best way to get an old PC back to life *by T***V on 27 May 2020* If your old Dell or similar PC fails to boot and its old then check the logic and count the beeps or lights and there is a strong chance the little battery is toast. If so just open the case and very carefully locate and remove the battery. These are usually located on the mother board and hidden in plain site. Note the way the battery is housed. Take a shot on your iPhone for safety. Read the part number and then order one of these. Replace and Windows may well grind back into life. Leave for another 10 years.Note. My fit other devices as well. ### ⭐⭐⭐⭐⭐ Have a look inside your PC and check that you are about to order the right one for your PC. *by D***K on 7 October 2020* I checked inside my computer before ordering the battery. As I have two computers on the go I checked inside the second one as well. Both use the same type of battery. So I ordered two. They both arrived on time and I fitted the defective computer with one of the new batteries, all was well and I was soon up and running again. Strange the second computer started acting up a couple of days later so I used the second battery on the second computer. Once again everything is running ok. ### ⭐⭐⭐⭐⭐ Worked fine *by J***S on 5 November 2019* I had to get this battery as the dreaded message came on: "Low Battery Alert!"So after humming and ahing for a while I sent off for the battery and replaced it.Make sure the cross on the battery - + for positive is facing upwards.I replaced the dead battery on the PC circuit board and it's fine so far. ## Frequently Bought Together - New CMOS BIOS RTC Battery for Dell Optiplex 740, 745, 755, 760 computers - Crucial BX500 SATA SSD 1TB, 2.5" Internal SSD, Up to 540MB/s, Laptop and Desktop (PC) Compatible, 3D NAND, Dynamic Write Acceleration, Solid State Drive - CT1000BX500SSD101 - Crucial RAM 8GB DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Portable Memory CT8G4SFRA32A --- ## 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/56206646-new-cmos-bios-rtc-battery-for-dell-optiplex-740-745](https://www.desertcart.pt/products/56206646-new-cmos-bios-rtc-battery-for-dell-optiplex-740-745) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-16*