--- product_id: 163067216 title: "ML1220 Rechargeable CMOS RTC Battery with Leads Cable Plug 2 Pins 2 Wires 1.25mm Pitch (CMOS, Laptop, Notebook, Motherboard, Bristlebots) Check Connector Specification Very Carefully" brand: "lefix" price: "71 zł" currency: PLN in_stock: true reviews_count: 8 url: https://www.desertcart.pl/products/163067216-ml1220-rechargeable-cmos-rtc-battery-with-leads-cable-plug-2 store_origin: PL region: Poland --- # 8mA Max Pulse Discharge 3V Rechargeable Power 2-Pin 2-Wire Connector ML1220 Rechargeable CMOS RTC Battery with Leads Cable Plug 2 Pins 2 Wires 1.25mm Pitch (CMOS, Laptop, Notebook, Motherboard, Bristlebots) Check Connector Specification Very Carefully **Brand:** lefix **Price:** 71 zł **Availability:** ✅ In Stock ## Summary > 🔌 Power up your system’s heartbeat with LeFix ML1220 — the tiny battery with a big impact! ## Quick Answers - **What is this?** ML1220 Rechargeable CMOS RTC Battery with Leads Cable Plug 2 Pins 2 Wires 1.25mm Pitch (CMOS, Laptop, Notebook, Motherboard, Bristlebots) Check Connector Specification Very Carefully by lefix - **How much does it cost?** 71 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/163067216-ml1220-rechargeable-cmos-rtc-battery-with-leads-cable-plug-2) ## 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 2-Pin Connector:** Plug-and-play 2-wire cable ensures seamless motherboard compatibility without guesswork. - • **Wide Laptop Compatibility:** Trusted replacement for Acer, Asus, Toshiba, Samsung models—never worry about fit. - • **Fix Critical System Errors:** Eliminate annoying CMOS checksum, system timer, and RTC errors instantly. - • **Compact & Lightweight Design:** Slim 12.5 x 2mm profile and just 5.5g—perfect for sleek laptops and notebooks. - • **Reliable 3V Rechargeable Battery:** Keep your laptop’s clock and BIOS error-free with a long-lasting 3V power source. ## Overview The LeFix ML1220 is a rechargeable 3V CMOS battery designed to replace faulty laptop motherboard batteries. Featuring a compact 12.5 x 2mm size, 17mAh capacity, and a 2-pin 2-wire connector, it resolves common BIOS errors like system battery failure and real-time clock issues. Compatible with popular Acer, Asus, Toshiba, and Samsung laptops, this lightweight 5.5g battery ensures reliable, long-lasting performance to keep your device running smoothly. ## Description Item Description Great Part to replace the broken and non working CMOS Battery for ML1220 ML 1220 Will fix the following error codes: Systems battery error / System CMOS checksum bad / System Timer error / Real-Time Clock Error Cable Specification:2 Wires - 2 Pin Connector Voltage: 3 V Nominal Capacity: 17mAh Max Pulse Discharge Current: 8Ma Dimension: 12.5 x 2mm Weight: 5.5g Compatibility For Acer Travelmate 2300 4000 SERIES 2303LCi 4002LCi For Asus 1101HA 1005HA 1008HA 1005HAB For Acer Aspire 5920 5920G For Toshiba Satellite U300 U400 U405D For Samsung NP900X3A-A02US 900X Package Includes: 1 x CMOS Battery for ML1220 ML 1220 Review: Perfect. Just what I needed - This is the battery I needed when mine died. What else can I say? That said, I wanted to make a point, because it's not been the first time excessive packaging was used when a small bubble-wrap envelope would have been the RIGHT choice. In this picture you see a small battery on a static bag on a paper envelope. Which was in this over-sized box. Imagine my surprise when I received notification that the package wasn't delivered because it wouldn't fit in my mailbox. It's a small battery. Really folks? Can't we perhaps fix that broken packaging algorithm? Maybe enough attention to this problem and they'll fix it. Please people, pay attention and give a care. Review: Correct product is Important - I ordered CMOS battery, and I have given the Model # also, the battery socket that goes on the motherboard is not right size. I did sort try to take out the battery from the side that is wires soldered to the battery. I am not going to return the battery, please see the attached pics to see the difference. I have attached the pics the two wires the one with smaller socket is the original sony battery with the model number ML 1220-M3(HLF)-F 0424.12 for Sony Vaio laptop model SVS151A11L. ## Features - CMOS Battery Type:ML1220 Rechargeable - Voltage: 3V - Nominal Capacity: 17mAh - Max Pulse Discharge Current: 8Ma - Weight: 5.5g ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07XQSMNPG | | Amperage | 3 Amps | | Antenna Location | Clock, Laptop | | Battery Capacity | 17 Milliamp Hours | | Battery Cell Composition | Lithium Manganese Dioxide | | Battery Cell Type | Lithium Manganese Dioxide | | Battery Weight | 4 Grams | | Best Sellers Rank | #229,338 in Electronics ( See Top 100 in Electronics ) #4,838 in Laptop Batteries | | Brand | LeFix | | Compatible Phone Models | For Certain laptop Models | | Customer Reviews | 4.0 out of 5 stars 99 Reviews | | Item Dimensions | 1.77 x 0.47 x 0.08 inches | | Item Weight | 5.5 Grams | | Manufacturer | LeFix | | Model Name | ml1220 | | Model Number | ML1220 | | Number of Batteries | 1 CR2 batteries required. (included) | | Recommended Uses For Product | Clock, Laptop | | Reusability | Rechargeable | | UPC | 655160982156 | | Unit Count | 1 Count | | Voltage | 3 Volts | ## Product Details - **Battery Capacity:** 17 Milliamp Hours - **Battery Cell Composition:** Lithium Manganese Dioxide - **Brand:** LeFix - **Number of Batteries:** 1 CR2 batteries required. (included) - **Recommended Uses For Product:** Clock, Laptop ## Images ![ML1220 Rechargeable CMOS RTC Battery with Leads Cable Plug 2 Pins 2 Wires 1.25mm Pitch (CMOS, Laptop, Notebook, Motherboard, Bristlebots) Check Connector Specification Very Carefully - Image 1](https://m.media-amazon.com/images/I/51fIJ88bYDL.jpg) ## Questions & Answers **Q: Is this battery the same as a 3v cr2016 type battery? that is what my laptop currently has.** A: You need to focus on the connector specification.CR2016,means,diameter of battery is 20mm,and thickness is 1.6mm. Ml1220,means diameter is 12mm,thickness is 2.0mm. **Q: What are the dimensions? thickness and diameter. NOT the package dimensions (useless information),** A: Ml1220,means diameter is 12mm,thickness is 2mm.Please check the connector.Please don't buy to try if you are not sure the connector specification. **Q: Will this product work in my asus k556u notebook/intel core i7?** A: we are not sure...please check the connector specification.this one,has,2 pins and 2 wires.pitch is 1.25mm. **Q: Will this fit samsung np- rf511 cmos bios battery and cable?** A: we are not sure.please check the connector specification.this one,has 2 pins and 2 wires.the pitch is 1.25mm. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect. Just what I needed *by N***N on December 3, 2019* This is the battery I needed when mine died. What else can I say? That said, I wanted to make a point, because it's not been the first time excessive packaging was used when a small bubble-wrap envelope would have been the RIGHT choice. In this picture you see a small battery on a static bag on a paper envelope. Which was in this over-sized box. Imagine my surprise when I received notification that the package wasn't delivered because it wouldn't fit in my mailbox. It's a small battery. Really folks? Can't we perhaps fix that broken packaging algorithm? Maybe enough attention to this problem and they'll fix it. Please people, pay attention and give a care. ### ⭐⭐⭐⭐ Correct product is Important *by I***D on July 9, 2020* I ordered CMOS battery, and I have given the Model # also, the battery socket that goes on the motherboard is not right size. I did sort try to take out the battery from the side that is wires soldered to the battery. I am not going to return the battery, please see the attached pics to see the difference. I have attached the pics the two wires the one with smaller socket is the original sony battery with the model number ML 1220-M3(HLF)-F 0424.12 for Sony Vaio laptop model SVS151A11L. ### ⭐⭐⭐⭐⭐ What I needed *by H***D on January 22, 2020* I have a Dell Latitude tablet (Similar to a Microsoft Surface). I was having issues rebooting because the BIOS battery was dead and not charging. I could not find the exact battery connector for my model, but this battery was the right version and size. I had to cut the connect off the end and splice in my connector. The tablet now boots up without BIOS errors. If you have a device that this battery fits, you should have experience taking apart tablets and cell phones before you attempt the replacement. ## Frequently Bought Together - LeFix ML1220 Rechargeable CMOS RTC Battery with Leads Cable Plug 2 Pins 2 Wires 1.25mm Pitch (CMOS, Laptop, Notebook, Motherboard, Bristlebots) Check Connector Specification Very Carefully - Rome Tech CMOS Battery for Dell Vostro 15 5510 - Laptop Backup BIOS RTC 3V ML1220 with 2 Wire Cable - Crucial 16GB DDR4 RAM, 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory, SODIMM 260-Pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CT16G4SFRA32A --- ## 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.pl/products/163067216-ml1220-rechargeable-cmos-rtc-battery-with-leads-cable-plug-2](https://www.desertcart.pl/products/163067216-ml1220-rechargeable-cmos-rtc-battery-with-leads-cable-plug-2) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-25*