--- product_id: 414420542 title: "BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black" brand: "bestek" price: "FREE" currency: JPY in_stock: false reviews_count: 6 url: https://www.desertcart.jp/products/414420542-bestek-150w-power-inverter-dc-12v-to-110v-ac-converter store_origin: JP region: Japan --- # 150W continuous power output Dual USB 4.2A smart charging ETL certified multi-protection BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black **Brand:** bestek **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔋 Stay powered, stay unstoppable — on the road or off! ## Quick Answers - **What is this?** BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black by bestek - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/414420542-bestek-150w-power-inverter-dc-12v-to-110v-ac-converter) ## Best For - bestek enthusiasts ## Why This Product - Trusted bestek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First, Always:** Built-in safety door and multi-layer protection against shocks, overloads, and overheating - • **Certified Reliability:** ETL listed for guaranteed safety and backed by an 18-month warranty - • **Compact & Travel-Ready:** iPhone-sized design with 32-inch plug fits any vehicle and lifestyle - • **Smart Dual USB Charging:** 4.2A total output with intelligent device detection for optimal speed - • **Power Your Devices Anywhere:** 150W continuous DC to AC power for laptops, tablets, and more ## Overview The BESTEK 150W Power Inverter converts 12V DC to 110V AC with a compact, lightweight design perfect for travel. Featuring dual smart USB ports delivering up to 4.2A total and a 150W continuous power outlet, it safely charges laptops, tablets, and phones. ETL certified with multi-protection safety features, it ensures reliable, worry-free power on the go. ## Description 4.2A output USB ports with smart IC that can automatically detect your devices to deliver optimal charging speed up to 2.4A per port, 4.2A total, one 110V AC outlets for charging larger devices such as laptops and tablets Review: More useful than expected - Been working on some old audio devices from the US and the standard step down was t quite cutting it. This is very handy as it outputs the correct voltage and frequency to ensure you're getting the right sound out of a nonUK device Review: Good value (review compares this unit with another Bestek model) - I purchased both this unit, the "BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black" (Model # MRI1511AU), and the "BESTEK 150W Power Inverter, DC 12V to 110V AC Car Inverter (Red Upgraded)" (Model # MRI1511L). I am posting this review on both product pages. Since the model names are identical apart from the letters at the end, I’ll refer to them that way. Short version: Although the specs are the same, and the prices nearly the same, this Dual USB "AU" version outperformed the “Red Upgraded” (“L”) version. (In addition, the “L” unit had something rattling loose inside on receipt.) More info: I plugged each unit, one at a time, into the 9v outlet in my car. I tested each unit by plugging in a small (20W) 2-speed motor, then switching it on low, high, off, high, low, etc. a few times each. Fan: - The fan was silent on this AU (box) unit; the fan apparently doesn’t kick in until cooling is needed. - The fan started immediately on the L (“red upgraded”) unit, gradually growing louder. It was, as other reviewers have noted, loud enough to be annoying in a quiet vehicle. Performance: - This “AU” box unit worked without difficulty: Running the motor was as seamless as when the same motor is plugged into an outlet. - The “L” unit worked … sort of. At first, the motor started up pretty much right away, switching from low speed to high without difficulty. But when I switched back to low speed, it stalled, recovering slowly. Same when I switched back to high speed. Then it worked fine again. Then it didn’t. I don’t know the cause, but it was as if the L unit was briefly overloaded when switching modes. Conclusion: - This “AU” unit gets five stars, at least for now: It works just fine, it’s simple, quiet, compact, and lightweight – just what I needed. - The “L” unit earns two stars: It works, sort of, but is inexplicably underpowered even though its specifications are the same as the “AU” unit. ## Features - [Rapid 3-Device Charging] Equipped with a powerful 150W AC outlet, an 18W USB-A, and a high-speed 30W USB-C PD port, this car inverter allows you to power your laptop, tablet, and phone simultaneously. Whether you're on a business trip or a family vacation, it ensures all your essential gear—from drones and cameras to CPAP machines—remains fully charged and ready for action - [Universal Compatibility for All Vehicles] Upgraded with an 11V-17V wide voltage range, this power inverter is engineered for seamless performance across all vehicle types, including Tesla, heavy-duty trucks, RVs, SUVs, and sedans. It provides a stable 110V AC power source, making it the perfect road trip essential for diverse car owners who demand reliability regardless of their vehicle's battery voltage - [Ultra-Compact & Travel-Ready Design] Measuring just 4.2 x 2.8 inches, our compact inverter is designed for maximum space-saving. The innovative detachable cable design allows for clutter-free storage and effortless switching between different setups. Its tiny footprint fits perfectly into your glove box or center console, offering limitless power without the bulk - [BESTEK Patented 10-Layer Protection] Built with our world-renowned Patented Smart Chip, this inverter provides a robust 10-layer safety system. From spark-proof technology and short-circuit prevention to over-temperature and over-load protection, your expensive electronics are shielded against all electrical risks. Certified by ETL, FCC, CE, and RoHS for your peace of mind and long-term durability - [Superior Cooling & Peak Performance] Crafted with a premium Aluminum Alloy casing and an integrated smart cooling fan, this inverter maintains an optimal operating temperature of 89°F. The rapid heat dissipation technology prevents overheating, ensuring the unit performs longer and quieter even during heavy use. Ideal for powering car refrigerators and laptops on long drives without any performance drops ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DW1PSRH | | Antenna Location | Vehicle | | Best Sellers Rank | 308,391 in Automotive ( See Top 100 in Automotive ) 556 in Power Inverters | | Box Contents | 1 | | Brand | BESTEK | | Brand Name | BESTEK | | Colour | Grey | | Customer Reviews | 4.5 out of 5 stars 2,956 Reviews | | Electrical Output Waveform | Pure Sine Wave | | Energy Specifications Standard | CE | | Frequency | 60 Hz | | Global Trade Identification Number | 06950334972037 | | Input Voltage | 12 Volts (DC) | | Inverter Capacity Volt-Amp | 150 | | Item Dimensions L x W x H | 10.7L x 7.1W x 3.3H centimetres | | Item Type Name | BESTEK 150W Car Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed | | Item Weight | 9.9 Ounces | | Manufacturer | BESTEK | | Manufacturer Part Number | MRI1511AU & MRS301A | | Model Name | DC 12V to 110V | | Model Number | 150W Car Power Inverter | | Model name | DC 12V to 110V | | Number of Outlets | 4 | | Output Power | 150 Watts | | Output Voltage | 110 Volts (AC) | | Peak Output Power Watts | 250 | | Power Source | Vehicle DC Power Socket | | Power source | Vehicle DC Power Socket | | Recommended uses for product | Vehicle | | Standby Power Shutoff | 85-90% | | Unit Count | 1.0 count | | Wattage | 150 | ## Product Details - **Brand:** BESTEK - **Model name:** DC 12V to 110V - **Power source:** Vehicle DC Power Socket - **Recommended uses for product:** Vehicle - **Wattage:** 150 ## Images ![BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black - Image 1](https://m.media-amazon.com/images/I/71-amel-7yL.jpg) ![BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black - Image 2](https://m.media-amazon.com/images/I/71BdE-xIrXL.jpg) ![BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black - Image 3](https://m.media-amazon.com/images/I/7171rHTBD9L.jpg) ![BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black - Image 4](https://m.media-amazon.com/images/I/81jOPC0PERL.jpg) ![BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black - Image 5](https://m.media-amazon.com/images/I/71NCfb5+NTL.jpg) ## Questions & Answers **Q: Why you choose this car inverter?** A: This inverter upgrade your drive with premium features Upgrade 11-17V: Suit for Tesla owners Anodized Aluminum Housing: Superior durability and heat management Removable Power Cable: Swap or store your cigarette lighter cord with ease **Q: Can it charge multiple devices at once?** A: Yes, the BESTEK 150W Power Inverter can charge multiple devices at once. It features -1 AC outlet for laptops, tablets, or other standard devices -1 18W USB-A & 1 30W USB-C for phones, cameras, and other USB-compatible devices **Q: What can it safely power?** A: This inverter 12v to 110v peak power is 250W, but continuous use must stay under 150W, you can power any devices within the power rate. ## Customer Reviews ### ⭐⭐⭐⭐⭐ More useful than expected *by M***. on 3 June 2025* Been working on some old audio devices from the US and the standard step down was t quite cutting it. This is very handy as it outputs the correct voltage and frequency to ensure you're getting the right sound out of a nonUK device ### ⭐⭐⭐⭐⭐ Good value (review compares this unit with another Bestek model) *by G***E on 24 October 2019* I purchased both this unit, the "BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black" (Model # MRI1511AU), and the "BESTEK 150W Power Inverter, DC 12V to 110V AC Car Inverter (Red Upgraded)" (Model # MRI1511L). I am posting this review on both product pages. Since the model names are identical apart from the letters at the end, I’ll refer to them that way. Short version: Although the specs are the same, and the prices nearly the same, this Dual USB "AU" version outperformed the “Red Upgraded” (“L”) version. (In addition, the “L” unit had something rattling loose inside on receipt.) More info: I plugged each unit, one at a time, into the 9v outlet in my car. I tested each unit by plugging in a small (20W) 2-speed motor, then switching it on low, high, off, high, low, etc. a few times each. Fan: - The fan was silent on this AU (box) unit; the fan apparently doesn’t kick in until cooling is needed. - The fan started immediately on the L (“red upgraded”) unit, gradually growing louder. It was, as other reviewers have noted, loud enough to be annoying in a quiet vehicle. Performance: - This “AU” box unit worked without difficulty: Running the motor was as seamless as when the same motor is plugged into an outlet. - The “L” unit worked … sort of. At first, the motor started up pretty much right away, switching from low speed to high without difficulty. But when I switched back to low speed, it stalled, recovering slowly. Same when I switched back to high speed. Then it worked fine again. Then it didn’t. I don’t know the cause, but it was as if the L unit was briefly overloaded when switching modes. Conclusion: - This “AU” unit gets five stars, at least for now: It works just fine, it’s simple, quiet, compact, and lightweight – just what I needed. - The “L” unit earns two stars: It works, sort of, but is inexplicably underpowered even though its specifications are the same as the “AU” unit. ### ⭐⭐⭐⭐ Cheap and doable product. Not a heavy performer! *by D***H on 29 May 2020* My 13” laptop charges up fine, feels little slow but does the job. If not plugged in together with other devices. Works good with phone charging with fast charging but not along the laptop charger. Fan is pretty loud if put in a certain position. Find a angle or shake it to cur done the noise. ## Frequently Bought Together - BESTEK 150W Power Inverter DC 12V to 110V AC Converter 4.2A Dual USB Car Adapter, Thinner Design with ETL Listed, Grey/Black - NOCO GC018 15A 14AWG 12V Adapter, Heavy-Duty Cigarette Lighter Plug, and Female Socket with Eyelet Terminals --- ## 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.jp/products/414420542-bestek-150w-power-inverter-dc-12v-to-110v-ac-converter](https://www.desertcart.jp/products/414420542-bestek-150w-power-inverter-dc-12v-to-110v-ac-converter) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-17*