--- product_id: 139891103 title: "Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan 2pin 4020 | DC 12 Volt Fan 40mm for PSU Replacment, DIY Small Electronic Equipment Cooling" brand: "wathai" price: "70.24 DT" currency: TND in_stock: true reviews_count: 13 category: "Wathai" url: https://www.desertcart.tn/products/139891103-wathai-40mm-x-20mm-12v-dual-ball-bearing-dc-brushless store_origin: TN region: Tunisia --- # 6000 RPM high-speed spin Dual ball bearing for 50,000 hrs lifespan 7.85 CFM airflow for efficient cooling Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan 2pin 4020 | DC 12 Volt Fan 40mm for PSU Replacment, DIY Small Electronic Equipment Cooling **Brand:** wathai **Price:** 70.24 DT **Availability:** ✅ In Stock ## Summary > ❄️ Keep your tech chill and your workspace sleek! ## Quick Answers - **What is this?** Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan 2pin 4020 | DC 12 Volt Fan 40mm for PSU Replacment, DIY Small Electronic Equipment Cooling by wathai - **How much does it cost?** 70.24 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/139891103-wathai-40mm-x-20mm-12v-dual-ball-bearing-dc-brushless) ## Best For - wathai enthusiasts ## Why This Product - Trusted wathai brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** 40x40x20mm size fits perfectly in tight tech spaces - • **Whisper-Quiet Cooling:** Operates at just 26dBA—cool your gear, not your ears - • **Ready for DIY Upgrades:** Includes mounting screws & 20cm cable for hassle-free installation - • **Plug & Play Versatility:** Standard 12V DC with 2-pin connector, ideal for PSU, NAS, 3D printers & more - • **Long-Lasting Reliability:** Dual ball bearings ensure 50,000 hours of smooth performance ## Overview The Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan delivers high-speed 6000 RPM airflow at a whisper-quiet 26dBA. Designed for compact electronic devices like PSUs, NAS, and 3D printers, it features durable dual ball bearings rated for 50,000 hours of reliable operation. With a standard 2-pin connector and included mounting hardware, this fan is the perfect upgrade for professionals seeking efficient, long-lasting cooling solutions. ## Description Product description 40mm fan Good for trunk-mounted electronics enclosure. High speed 6000RPM not for office. As a cooling fan on the 3D printer,great at full power,with most of the noise coming from moving air. Used it on battery charger to keep it cool and worked great. Parameters 12V 2Pin Ball 5V 2Pin Ball 12V 3Pin Sleeve 12V 4pin Ball 24V 2pin Ball ## Features - 40x20mm size fan for replacing fans in inverter and storage equipmentcs such as PSU，battery charger, 3D printer, switches, NAS , DVRs etc - The 40mm DC brushless fan operates at 12V, ideal for cooling electronic equipment. This compact 40x40x20 12V fan ensures efficient cooling for various electronics, making it a reliable choice for 12V cooling needs - Dual ball bearing providing reliable performance for prolonged periods with a lifespan of 50,000 hours - Rated Voltage:12V 0.05A; Speed: 6000RPM; Air flow: 7.85CFM; Noise:26dBA; Connecter: XH2.54-2Pin; Cable Length: 20cm Or 8 inche - 1 Piece fan and mounting screws & nuts; Dimension: 40mm(L) x 40mm(W) x 20mm(H) / 1.58x1.58x0.79 in. per fan ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PYWVPMY | | Air Flow Capacity | 7.85 Cubic Feet Per Minute | | Best Sellers Rank | #334 in Computer Case Fans | | Brand | Wathai | | Brand Name | Wathai | | Compatible Devices | Amplifier, Desktop, Gaming Console, Printer, Projector | | Cooling Method | fan cooling | | Customer Reviews | 4.4 out of 5 stars 445 Reviews | | Item Dimensions L x W x H | 1.56"L x 1.58"W x 0.79"H | | Item Weight | 0.78 Ounces | | Manufacturer | Wathai | | Material Type | Plastic | | Maximum Rotational Speed | 6000 RPM | | Model | 4020B12V2P2.5 | | Noise Level | 26 Decibels | | Number of Items | 1 | | Part Number | 4020B12V2P2.5 | | Power Connector Type | 2-Pin | | Product Dimensions | 1.56"L x 1.58"W x 0.79"H | | UPC | 702334356395 | | Unit Count | 1 Count | | Voltage | 12 Volts (DC) | ## Product Details - **Air Flow Capacity:** 7.85 Cubic Feet Per Minute - **Brand:** Wathai - **Compatible Devices:** Amplifier, Desktop, Gaming Console, Printer, Projector - **Cooling Method:** fan cooling - **Material:** Plastic - **Maximum Rotational Speed:** 6000 RPM - **Noise Level:** 26 Decibels - **Power Connector Type:** 2-Pin - **Product Dimensions:** 1.56"L x 1.58"W x 0.79"H - **Voltage:** 12 Volts (DC) ## Images ![Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan 2pin 4020 | DC 12 Volt Fan 40mm for PSU Replacment, DIY Small Electronic Equipment Cooling - Image 1](https://m.media-amazon.com/images/I/61hfGa4JKqL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***C on May 2, 2025* ### ⭐⭐⭐⭐⭐ Review *by J***B on March 31, 2026* ### ⭐⭐⭐⭐ Review *by M***K on February 27, 2023* ## Frequently Bought Together - Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan for 12 Volt PSU Replacment, DIY Small Electronic Equipment Cooling - Coolerguys 12v Ultra Quiet Fan for Pi Devices, 3D Printers, and Microelectronics (40x20mm) - Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) --- ## 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.tn/products/139891103-wathai-40mm-x-20mm-12v-dual-ball-bearing-dc-brushless](https://www.desertcart.tn/products/139891103-wathai-40mm-x-20mm-12v-dual-ball-bearing-dc-brushless) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-11*