--- product_id: 241131084 title: "RT-CMOS-13" brand: "rome tech" price: "€ 9.52" currency: EUR in_stock: true category: "Rome Tech" url: https://www.desertcart.ie/products/241131084-rt-cmos-13 store_origin: IE region: Ireland --- # 200mAh Lithium-Ion Capacity 3V Rechargeable Power Plug & Play 2-Wire Connector RT-CMOS-13 **Brand:** rome tech **Price:** € 9.52 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Power your productivity with the ML1220 – the tiny battery with a big impact! ## Quick Answers - **What is this?** RT-CMOS-13 by rome tech - **How much does it cost?** € 9.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/241131084-rt-cmos-13) ## 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€’ **Trusted by Thousands:** Highly rated with 4.4 stars and top 200 rank in laptop batteriesβ€”join the savvy pros upgrading now. - β€’ **Compact & Universal Fit:** Ultra-small size designed to fit Dell Vostro 15 5510 and multiple XPS models effortlessly. - β€’ **Quick 10-Minute Installation:** Simple plug-and-play with 2-pin cableβ€”get your system up and running fast. - β€’ **Durable Heat-Shrink Protection:** Premium casing ensures long-lasting reliability under laptop operating conditions. - β€’ **Reliable 3V Rechargeable Battery:** Pre-charged and auto-recharges to full voltage for seamless BIOS performance. ## Overview The Rome Tech ML1220 CMOS Battery is a rechargeable 3V lithium-ion power source designed specifically for Dell Vostro 15 5510 and compatible XPS laptops. Featuring a compact form factor with a 2-wire connector, it offers quick installation and reliable BIOS RTC support. Pre-charged and auto-recharging, it ensures consistent performance with durable heat-shrink protection, backed by strong customer ratings and a 30-day warranty. ## Description Buy Rome Tech ML1220 CMOS Battery for Dell Vostro 15 5510 – BIOS RTC ML1220 XPS 13 Rechargeable CMOS Battery for PC Motherboard with 2 Wire Cable (1-Pack): Batteries - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases ## Features - PLEASE NOTE: ML1220 batteries are rechargeable and come pre-charged to 2.7-2.8V. The computer will recharge them to 3v after installation. The battery may arrive at 2.6–2.8 V; the computer will recharge it to 3.0 V after installation for normal use. - Compatible with Dell Vostro 15 5510 - Enjoy extended reliability of the ML1220 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 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 | |---------------|-------| | ASIN | B08LBR15JK | | Antenna Location | Laptop | | Battery Capacity | 200 Milliamp Hours | | Battery Cell Type | Lithium Ion | | Battery Weight | 1 Ounces | | Best Sellers Rank | #3,998 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #162 in Laptop Batteries | | Brand | Rome Tech | | Compatible Phone Models | DELL XPS 15 13 9343 9350 9360 9365 | | Customer Reviews | 4.4 4.4 out of 5 stars (145) | | Global Trade Identification Number | 00308135951618 | | Manufacturer | Rome Tech | | Model Name | ml1220 | | Model Number | CMOSRTB227 | | Number of Batteries | 1 Lithium Ion batteries required. | | Reusability | Single Use | | UPC | 308135951618 | | Unit Count | 1.0 Count | | Voltage | 3 Volts | | Warranty Description | 30 Days | ## Product Details - **Battery Capacity:** 200 Milliamp Hours - **Battery Cell Composition:** Lithium Ion - **Brand:** Rome Tech - **Number of Batteries:** 1 Lithium Ion batteries required. - **Recommended Uses For Product:** Laptop ## Images ![RT-CMOS-13 - Image 1](https://m.media-amazon.com/images/I/61AFgkSGbUL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What are the dimensions: thickness and diameter.? not package dimensions (useless information).** A: Hi, cable is 4.5cm. Battery dims are 12.5mm in diameter and 2mm in height. **Q: Do the metal pins go up or down and are you supposed to hold on button while installing** A: I installed my CMOS on a Dell XPS-15 Model 9570. CONDUCT YOUR RESEARCH VIA GOOGLE SEARCH! Some very-explicit instructional monologues and YouTube videos, which I did access, for my removal and installation. You do know, you must-LITERALLY-disassemble the entire computer. AND YOU MUST HAVE ON HAND, FOR REASSEMBLY, 1) high-quality grease, to reattach the heat sink, to the CPU, and, 2) a good, safe solvent, as 91% isopropyl alcohol, to COMPLETELY remove the old grease, and, 3)some super-fine grit sandpaper or emory cloth, to remove old grease residue, AND POLISH THE HEAT SINK AND CPU CONTACT SURFACES, TO A MIRROR FINISH---NO JOKE! And it is only a grease, not a glue or adhesive, you will remove, and reapply. Male plug only inserts into female receptacle one way, as a security feature, to prevent reverse-polarity mistake. There is no physical reset "button" to actuate; you must reset the Real Time Clock (RTC) via settings---easy task for the RTC set. AGAIN, FIND YOUR MONOLOGUES AND VIDEOS. **Q: Will this work for a XPS 9550?** A: Hello, Yes, this RTC CMOS battery work, **Q: Will this work in an XPS 15 9530?** A: Yes, it worked fine in mine. ## Frequently Bought Together - Rome Tech CMOS Battery for Dell Vostro 15 5510 - Laptop Backup BIOS RTC 3V ML1220 with 2 Wire Cable - JOREST 38Pcs Small Precision Screwdriver Set with Torx T5, T6, Y00, Mini Repair Tool Kit for Macbook, Computer, Laptop, iPhone, PS4 PS5, Xbox, Switch, Eyeglasses, Watch, Ring Doorbell, Electronic, etc - ARCTIC MX-4 (incl. Spatula, 4 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC), Very high Thermal Conductivity, Long Durability, Safe Application --- ## 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.ie/products/241131084-rt-cmos-13](https://www.desertcart.ie/products/241131084-rt-cmos-13) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-07-06*