--- product_id: 311372188 title: "Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch" brand: "lefix" price: "13461CFA" currency: XOF in_stock: true reviews_count: 8 category: "Le Fix" url: https://www.desertcart.sn/products/311372188-coin-cell-rct-cmos-battery-compatible-with-hp-hp-820 store_origin: SN region: Senegal --- # Compact 2-inch Cable Length 3V Lithium Manganese Dioxide Power 2-Pin Connector with 2-Wire, 1.0mm Pitch Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch **Brand:** lefix **Price:** 13461CFA **Availability:** ✅ In Stock ## Summary > 🔋 Power your legacy laptop with precision and never miss a beat! ## Quick Answers - **What is this?** Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch by lefix - **How much does it cost?** 13461CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/311372188-coin-cell-rct-cmos-battery-compatible-with-hp-hp-820) ## 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 - • **Reliable BIOS Power:** Ensures your laptop’s date and settings never reset unexpectedly. - • **Long-lasting Voltage:** 3V lithium manganese dioxide battery delivers stable power for years. - • **Compact & Lightweight:** Slim 45x20x3mm size and just 9 grams—engineered for seamless integration. - • **Perfect Compatibility:** Specifically designed for HP 820 G1 & 640 G1 models with exact connector fit. - • **Plug & Play Connector:** 2-pin, 2-wire design with 1.0mm pitch for hassle-free installation. ## Overview The LeFix Coin-Cell RCT CMOS Battery is a 3V lithium manganese dioxide power source designed to maintain BIOS settings on HP 820 G1 and 640 G1 laptops. Featuring a 2-pin, 2-wire connector with a 1.0mm pitch and a compact 2-inch cable, it ensures perfect compatibility and easy installation. Lightweight and reliable, it prevents date errors and boot issues caused by depleted CMOS batteries, making it an essential upgrade for maintaining your laptop’s performance. ## Description Always got wrong date and error message when you turn on your laptop? Even the Windows XP can't be loaded correctly? (Windows XP can't be loaded correctly when the Date setting is no sense, this could happen when the CMOS battery voltage is low). Then it is time to change your CMOS RTC coin battery! Every computer has a small coin cell battery to power the BIOS chip to keep the date, and other internal settings effective. Without these cmos batteries or a dead cmos battery these internal setting will not function. CMOS RTC battery should be replaced every few years (typically 3-4 yrs). Review: Perfect - Exact battery for my HP 820 laptop Review: Flat battery - Battery was totally flat. ## Features - Battery Size:CR2032 - Connector: 2 Pins & 2 Wire - Cable Length:2 inch(Including the Connector Length) - Connector Pitch:1.0mm - Compatible Model:All Coin-cell BIOS battery with 2 Pins 2 Wire,1.0mm Pitch ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08PRYPHKM | | Antenna Location | Laptop | | Battery Capacity | 220 Amp Hours | | Battery Cell Type | Lithium Manganese Dioxide | | Battery Weight | 4 Grams | | Battery capacity | 220 Amp Hours | | Battery cell composition | Lithium Manganese Dioxide | | Best Sellers Rank | 104,182 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 2,218 in Laptop Batteries | | Brand | LeFix | | Brand Name | LeFix | | Compatible Phone Models | For Laptop | | Customer Reviews | 4.3 out of 5 stars 119 Reviews | | Item Dimensions | 45 x 20 x 3 millimetres | | Item Weight | 9 Grams | | Manufacturer | LeFix | | Model Name | cr2032 | | Model Number | 820 G1 640 G1 | | Number of Batteries | 1 CR2 batteries required. (included) | | Number of batteries | 1 CR2 batteries required. (included) | | Recommended uses for product | Laptop | | Reusability | Single Use | | Unit Count | 1.0 count | | Unit count | 1.0 count | | Voltage | 3 Volts | ## 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 ![Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch - Image 1](https://m.media-amazon.com/images/I/61eX1ZGh25L.jpg) ![Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch - Image 2](https://m.media-amazon.com/images/I/61Bw0f54zVL.jpg) ![Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch - Image 3](https://m.media-amazon.com/images/I/71JIwKaLCIL.jpg) ![Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch - Image 4](https://m.media-amazon.com/images/I/71qK5ZwKg+L.jpg) ![Coin-Cell RCT CMOS Battery Compatible with HP HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch - Image 5](https://m.media-amazon.com/images/I/61J9IaZhjML.jpg) ## Questions & Answers **Q: Will this fit a Dell Latitude E7440?** A: Not fit for E7440 because the connector is different.I think you shall buy this item. https://www.amazon.com/dp/B089DX8VK1?ref=myi_title_dp AMAZON ASIN:B089DX8VK1 **Q: Will this fit hp hp probook 640 g2?** A: hello,please check this item for probook 640 g2 https://www.amazon.com/dp/B09VXPCV67?ref=myi_title_dp **Q: Will it fit gateway m-6332 laptop** A: have to look at ur battery and compare the wires to this one. if it dont look the same it wont fit. **Q: Will this battery fit a hp pavilion dv7-6c90us?** A: Not fit into hp pavilion dv7-6c90us. The correct connector shall be this link: https://www.amazon.com/dp/B089FJ85ZF?ref=myi_title_dp ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect *by J***S on 7 April 2024* Exact battery for my HP 820 laptop ### ⭐ Flat battery *by M***D on 1 May 2024* Battery was totally flat. ### ⭐⭐ can not use it *by M***A on 16 June 2025* the white bit on the wire was broken so means i can not use it ## Frequently Bought Together - LeFix CMOS RTC BIOS Battery Replacement Compatible with HP 820 G1 640 G1 CR2032 with Connector 2 Pins 2 Wires 1.0mm Pitch - PNY CS900 500GB 3D NAND 2.5" SATA III Internal Solid State Drive (SSD) - (SSD7CS900-500-RB) - 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.sn/products/311372188-coin-cell-rct-cmos-battery-compatible-with-hp-hp-820](https://www.desertcart.sn/products/311372188-coin-cell-rct-cmos-battery-compatible-with-hp-hp-820) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-07*