--- product_id: 485883811 title: "DROK 12v to 3.7v Buck Converter, DC 8-35V to 3.7V 3A 11W Voltage Regulator Board Power Supply Module, 5V 6V 9V 12V 24V Waterproof Car Volt Step Down Buck Converter" brand: "drok" price: "€ 19.18" currency: EUR in_stock: true category: "Drok" url: https://www.desertcart.hr/products/485883811-drok-12v-to-3-7v-buck-converter-dc-8-35v store_origin: HR region: Croatia --- # 95%+ efficiency Waterproof & dustproof Low heat, high safety DROK 12v to 3.7v Buck Converter, DC 8-35V to 3.7V 3A 11W Voltage Regulator Board Power Supply Module, 5V 6V 9V 12V 24V Waterproof Car Volt Step Down Buck Converter **Brand:** drok **Price:** € 19.18 **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects with precision and protection! ## Quick Answers - **What is this?** DROK 12v to 3.7v Buck Converter, DC 8-35V to 3.7V 3A 11W Voltage Regulator Board Power Supply Module, 5V 6V 9V 12V 24V Waterproof Car Volt Step Down Buck Converter by drok - **How much does it cost?** € 19.18 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/485883811-drok-12v-to-3-7v-buck-converter-dc-8-35v) ## Best For - drok enthusiasts ## Why This Product - Trusted drok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Cool:** Sleek aluminum casing with natural cooling minimizes heat generation for long-lasting durability. - • **Robust Safety Suite:** Advanced protections against over-current, over-temperature, reverse polarity, and short circuits keep your gear safe. - • **Powerhouse Efficiency:** Maximize energy with over 95% conversion efficiency, keeping your devices charged and ready. - • **Built to Brave Elements:** Waterproof, dustproof, and shockproof design ensures reliable performance in any environment. - • **Versatile Voltage Step-Down:** Seamlessly converts 8-35V input to a stable 3.7V output at 3A, perfect for automotive, solar, and DIY tech projects. ## Overview The DROK 12V to 3.7V Buck Converter is a compact, high-efficiency DC/DC step-down voltage regulator delivering 3A at 11W output power. Designed with robust waterproof and dustproof features, it offers comprehensive safety protections and natural cooling in a durable aluminum case, making it ideal for automotive, solar, and electronic applications requiring stable 3.7V power supply. ## Description DROK DC/DC Step Down Power Regulator 12V to 3.7V ConverterParameter: Input voltage: DC 12V/9V (8V-35V) Output voltage: DC 3.7V Output current: 3A Output power: 11W Conversion efficiency: over 95% max. Working temperature: -20℃~80℃ Dimension: 35*26*21mm/1.37*1.02*0.98 inch Mounting hole distance: 41mm/1.61 inch Mounting hole diameter: 4mm/0.15 inch Installation cable length: 13-14cm/5.11-5.51 inch Cooling: natural coolingProtection: Over-current protection; Over-temp protection; Input reverse connection protection; Short-circuit protectionWiring:Input: Red wire: input + Black wire: input -Output: Yellow wire: output + Black wire: output -Package Included: 1x Step Down Module ## Features - PARAMETER --- input voltage DC 8V-35V (9V 12V 24V 30V); output voltage DC 3.7V; output current 3A; output power 11W. - APPLICATION --- 12v to 3.7v step down converter. Can be used for car audio, LED display; motor, speaker; auto map navigator; hard disk player; media; electric fan; toy cars; air conditioning; solar energy, etc. - PROTECTION --- over-current protection; over-temp protection; input reverse connection protection; short-circuit protection; waterproof; dust-proof; moisture-proof; shock-proof. - CONVERSION EFFICIENCY --- over 95% max. - FEATURE --- high conversion efficiency, low heat generation; aluminum case, good heat dissipation, high safety. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B6PNWTFC | | Best Sellers Rank | #21,722 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #84 in Power Converters | | Brand | DROK | | Color | multicolor | | Customer Reviews | 4.7 4.7 out of 5 stars (24) | | Input Voltage | 12 volts, 3.7 volts, 35 volts, 9 volts | | Item Weight | 0.03 kg | | Manufacturer | DROK | | Model Number | 200660 | | Number of Items | 1 | | Number of Outlets | 1 | | Number of Packs | 1 | | Output Voltage | 3.7 volts_of_direct_current | | Warranty Description | 1 Year Manufacturer | ## Product Details - **Brand:** DROK - **Color:** multicolor - **Input Voltage:** 12 volts, 3.7 volts, 35 volts, 9 volts - **Item Weight:** 0.03 kg - **Output Voltage:** 3.7 volts_of_direct_current ## Images ![DROK 12v to 3.7v Buck Converter, DC 8-35V to 3.7V 3A 11W Voltage Regulator Board Power Supply Module, 5V 6V 9V 12V 24V Waterproof Car Volt Step Down Buck Converter - Image 1](https://m.media-amazon.com/images/I/616ON4FcFjL.jpg) ## Available Options This product comes in different **Size** options. --- ## 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.hr/products/485883811-drok-12v-to-3-7v-buck-converter-dc-8-35v](https://www.desertcart.hr/products/485883811-drok-12v-to-3-7v-buck-converter-dc-8-35v) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-10-16*