--- product_id: 523926684 title: "Rome Tech ML1220 CMOS BIOS Battery for Dell Precision 5510, 5520, 5530, 5540, 5290 2-in-1 - Rechargeable Laptop Backup RTC with 2 Wire Cable" brand: "rome tech" price: "β‚©25314" currency: KRW in_stock: true reviews_count: 3 url: https://www.desertcart.kr/products/523926684-rome-tech-ml1220-cmos-bios-battery-for-dell-precision-5510 store_origin: KR region: South Korea --- # 225mAh long-lasting capacity 3V rechargeable power 2-wire plug & play connector Rome Tech ML1220 CMOS BIOS Battery for Dell Precision 5510, 5520, 5530, 5540, 5290 2-in-1 - Rechargeable Laptop Backup RTC with 2 Wire Cable **Brand:** rome tech **Price:** β‚©25314 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Power your precision β€” never miss a beat with Rome Tech’s ML1220! ## Quick Answers - **What is this?** Rome Tech ML1220 CMOS BIOS Battery for Dell Precision 5510, 5520, 5530, 5540, 5290 2-in-1 - Rechargeable Laptop Backup RTC with 2 Wire Cable by rome tech - **How much does it cost?** β‚©25314 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/523926684-rome-tech-ml1220-cmos-bios-battery-for-dell-precision-5510) ## 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 - β€’ **Compact Powerhouse:** Ultra-small form factor fits seamlessly without bulk or hassle. - β€’ **Premium Durability:** Heat-shrink protection ensures long-lasting, stable battery life. - β€’ **Precision Compatibility:** Tailored for Dell Precision 5510-5540 & Latitude 5290 2-in-1 models. - β€’ **Rechargeable Reliability:** Automatically recharges to optimal 3.0V for sustained performance. - β€’ **Effortless 10-Minute Swap:** Quick, no-solder installation keeps your workflow uninterrupted. ## Overview The Rome Tech ML1220 CMOS BIOS battery is a rechargeable 3V lithium coin cell designed specifically for Dell Precision 5510-5540 and Latitude 5290 2-in-1 laptops. Featuring a compact size, 225mAh capacity, and a convenient 2-wire connector, it offers easy installation and reliable RTC backup power with heat-shrink durability for extended lifespan. ## 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 ML1220 best suits to replace your broken or non-working old battery - we provide premium quality only. The battery may arrive at 2.6–2.8 V; the computer will recharge it to 3.0 V after installation for normal use. - RTC rechargeable battery compatible with such models as: Dell Precision 5510 / Dell Precision 5520 / Dell Precision 5530 / Dell Precision 5540 / Dell Latitude 5290 2-in-1 - Enjoy extended reliability of the CMOS 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 CMOS 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 | Laptop | | Asin | B0BSGSWHM2 | | Battery Capacity | 225 milliamp_hours | | Battery Cell Type | Other Than Listed | | Battery Weight | 3 g | | Best Sellers Rank | #15,817 in Computers & Accessories (See Top 100 in Computers & Accessories) #787 in Laptop Batteries | | Brand | Rome Tech | | Compatible Phone Models | Dell Precision 5510 / Dell Precision 5520 / Dell Precision 5530 / Dell Precision 5540 ? / Dell Latitude 5290 2-in-1 | | Customer Reviews | 2.9 2.9 out of 5 stars (5) 2.9 out of 5 stars | | Included Components | battery | | Manufacturer | Rome Tech | | Model Name | ml1220 | | Model Number | 22SLIMPNML1220S | | Number Of Batteries | 1 C batteries required. (included) | | Reusability | Single Use | | Unit Count | 1 Count | | Upc | 712302251898 | | Voltage | 3 volts | | Warranty Description | 30 Days | ## Product Details - **Battery Capacity:** 225 Milliamp Hours - **Battery Cell Composition:** Other Than Listed - **Brand:** Rome Tech - **Number of Batteries:** 1 C batteries required. (included) - **Recommended Uses For Product:** Laptop ## Images ![Rome Tech ML1220 CMOS BIOS Battery for Dell Precision 5510, 5520, 5530, 5540, 5290 2-in-1 - Rechargeable Laptop Backup RTC with 2 Wire Cable - Image 1](https://m.media-amazon.com/images/I/61jTNKfIkVL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐ Deceiving. Not 3 Volts battery. *by on Reviewed in the United States January 6, 2025* This battery is advertised as a 3 Volts but it only has 2.61 Volts upon arrival. Deceiving.The original battery that I am replacing has 2.6 volts but the laptop has good 5 years or more of use, doesn’t make sense to replace with this supposedly β€œnew” battery and doesn’t make sense why the sellers advertise something as 3 Volts if it only has 2.61 volts. Very disappointing. I don’t recommend. ### ⭐⭐⭐ Low voltage *by on Reviewed in the United States December 6, 2024* I measured voltage is 2.6 Volts not 3 volts . I returned. ### ⭐ Ordered New, Recieved used instead. *by on Reviewed in the United States October 14, 2025* Ordered New, Recieved used instead. ## Frequently Bought Together - Rome Tech ML1220 CMOS BIOS Battery for Dell Precision 5510, 5520, 5530, 5540, 5290 2-in-1 - Rechargeable Laptop Backup RTC with 2 Wire Cable - Replacement Keyboard for Dell XPS 15 9550 9560 9570, Precision 5510 5520 5530 5540 & inspiron 15 7558 7568 Laptop, Dell Precision 5510 Keyboard with Backlit US Layout P/N: 0VC22N 0GDT9F --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/523926684-rome-tech-ml1220-cmos-bios-battery-for-dell-precision-5510](https://www.desertcart.kr/products/523926684-rome-tech-ml1220-cmos-bios-battery-for-dell-precision-5510) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-07-30*