--- product_id: 177529791 title: "BESTEK 500W Pure Sine Wave Power Inverter DC 12V to AC(2 Outlets) 110V Car Charger Plug Inverter Adapter Converter with 4.2A Dual USB Charging Ports, ETL Listed" brand: "bestek" price: "¥25807" currency: JPY in_stock: true category: "Bestek" url: https://www.desertcart.jp/products/177529791-bestek-500w-pure-sine-wave-power-inverter-dc-12v-to store_origin: JP region: Japan --- # 500W Pure Sine Wave Output 2 AC Outlets + 2 USB Ports (4.2A max) Multi-layer Safety Protections BESTEK 500W Pure Sine Wave Power Inverter DC 12V to AC(2 Outlets) 110V Car Charger Plug Inverter Adapter Converter with 4.2A Dual USB Charging Ports, ETL Listed **Brand:** bestek **Price:** ¥25807 **Availability:** ✅ In Stock ## Summary > 🔋 Power your journey with pure sine wave precision—never settle for less! ## Quick Answers - **What is this?** BESTEK 500W Pure Sine Wave Power Inverter DC 12V to AC(2 Outlets) 110V Car Charger Plug Inverter Adapter Converter with 4.2A Dual USB Charging Ports, ETL Listed by bestek - **How much does it cost?** ¥25807 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/177529791-bestek-500w-pure-sine-wave-power-inverter-dc-12v-to) ## 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 - • **Compact & Travel-Ready Design:** Lightweight (2.2 lbs) and portable with ETL certification—your perfect off-grid companion for work, road trips, and emergencies. - • **Flexible Power Source Options:** Plug into your 12V cigarette lighter for convenience or use alligator clips for full 500W capacity directly from your car battery. - • **Seamless Pure Sine Wave Power:** Delivers clean, grid-quality AC power for sensitive electronics and cordless tools—no interference, no compromise. - • **Robust Thermal & Electrical Safety:** Built-in fan, aluminum casing, and replaceable fuses protect against overheating, overload, and voltage spikes for peace of mind. - • **Dual AC Outlets + Fast USB Charging:** Power multiple devices simultaneously with 2 AC outlets plus dual USB ports that auto-detect and deliver up to 2.4A each. ## Overview The BESTEK 500W Pure Sine Wave Power Inverter converts 12V DC from your vehicle into clean 110V AC power with two outlets and dual USB ports delivering up to 4.2A total. Featuring advanced thermal management, multiple safety protections, and flexible connection options, it supports sensitive electronics and heavy inductive loads with minimal interference. ETL listed and compact, it’s ideal for professionals on the go who demand reliable, high-quality power anywhere. ## Description Buy BESTEK 500W Pure Sine Wave Power Inverter DC 12V to AC(2 Outlets) 110V Car Charger Plug Inverter Adapter Converter with 4.2A Dual USB Charging Ports, ETL Listed: Power Inverters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - BESTEK 500W Pure Sine Wave Car Inverter:Its output waveform is same as the AC power waveform of mains power grid which delivers a smoothly-varying sine wave for sensitive electronics provided by the electric utility.Perfects for off-grid system,Lower THD,Less wear,Strong inductive Loads Capability.It has little interference with radios, communication and precision equipment.It's also recommended by most cordless tool manufacturer that a pure sine wave inverter is used to ensure long battery life - This is an inverter converting DC from your car battery to AC for whatever you want to use within its Watt range.It can pull power from the battery through the cigarette lighter plug or directly clamp the alligator battery clips onto the car battery.Plug this into 12v cigarette lighter outlet provides continuous DC to AC power with 2 AC outlets operates any 110v device and 2 USB ports which detects your device automatically to deliver its fastest charge speed up to 2.4 amps per port/4.2 amps max - The Sine Wave Inverter has well placed thermal protection sensors,The aluminum alloy casing with a few ripples,Unique vents and also a built-in FAN which comes ON under NO any loads or when the Inverter becomes Hot Once Powerred. It has 2 x 40 amp/32V external replaceable fuse for protection when hooked up to your battery,readily accessible/replaceable from the back of the Inverter;when hooked to cigarette lighter it will use 15 amp fuse designated to your car. - Isolated Voltage Protects Perfectly for your device from Over-voltage,Under-voltage,Overheat,Overload,Reverse Polarity,Short circuit.it will not drain your battery dry because of an under-voltage protection point.The Inverter does automatically sense overload condition and shuts down AC power when the load exceeds 500W.You will need to power Off/On to reset the overload condition indicated by the Flashing Red.The ON-OFF switch only works for the 3-prong plugs. - The 12V plug is spring-loaded and fits snugly into the receptacle.You cannot get 500 watts from 12volt cigarette lighter plug,needs alligator clips for car battery. If you're going to be plugging this into car cigarette lighter,you should keep the wattage under 150,since that is what most car fuses are set for.What You Get:1xBESTEK 500W Pure Sine Inverter,1xUser Manual,2xbattery clamps cable,1x 12V cigarette Lighter plug cable,2 x spare fuses. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B082MDRC64 | | Antenna Location | Vehicle | | Battery Capacity | 12 | | Best Sellers Rank | #7,210 in Automotive ( See Top 100 in Automotive ) #19 in Power Inverters | | Brand | BESTEK | | Built-In Media | 500W Pure Sine Wave Power Inverter DC 12V to AC 110V Car Plug Inverter Adapter Power Converter with 4.2A Dual USB Charging Ports and 2 AC Outlets Car Charger | | Color | 1 Red | | Customer Reviews | 4.5 4.5 out of 5 stars (3,363) | | Electrical Output Waveform | Pure Sine Wave | | Energy Specifications Met | ETL | | Frequency | 60 hertz | | Input Voltage | 12 volts | | Item Dimensions L x W x H | 8.7"L x 4.3"W x 2.4"H | | Item Weight | 2.2 pounds | | Manufacturer | BESTEK | | Mfr Part Number | MRZ5011BU | | Model Name | MRZ5011BU | | Model Number | MRZ5011BU | | Number of Outlets | 4 | | Output Power | 500 watts | | Output Voltage | 110 volts | | Power Source | DC | | Standby Power Shutoff | 90 | | Unit Count | 1 Count | | Voltage | 110 volts | | Warranty Description | 2-year Warranty | | Wattage | 500 watts | ## Product Details - **Battery Capacity:** 12 - **Brand:** BESTEK - **Power Source:** DC - **Recommended Uses For Product:** Vehicle - **Wattage:** 500 watts ## Images ![BESTEK 500W Pure Sine Wave Power Inverter DC 12V to AC(2 Outlets) 110V Car Charger Plug Inverter Adapter Converter with 4.2A Dual USB Charging Ports, ETL Listed - Image 1](https://m.media-amazon.com/images/I/71KMwo8qqZL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: how quickly will it inflate a queen sized air mattress?** A: Its an inverter, not a compressor, so it will inflate your air mattress at the same rate that an overripe banana would... ie, it wont. It cant. So eat the banana and purchase an inflator. Now, if you are using this inverter it to *power* an inflator, then the inflator will work at the same speed as it would plugged into a wall socket. But I’d still eat a banana because its clear you have a potassium deficiency (but I’m not a doctor so you may want a second opinion). **Q: is this a three phase inverter?** A: 500W Three Phase @ $60? In what world is that? **Q: I'll be attaching a relay on the (+) connector, so I'll keep the switch in the ON position all the time, is there a problem with this setup?** A: Max power draw is very close to 40 amps (34-38 depending on battery voltage). The relay would have to be a 50 amp rating MINUMUM, and higher if you can get it. I believe the next common rating is 70 or 75 amps. **Q: What size are the posts on the inverter? 5/16 or 3/8?** A: It is neither. The posts on my unit are 3/16, which is adequate for the loop connectors and any load I'll be creating while using the unit. ## Frequently Bought Together - BESTEK 500W Pure Sine Wave Power Inverter DC 12V to AC(2 Outlets) 110V Car Charger Plug Inverter Adapter Converter with 4.2A Dual USB Charging Ports, ETL Listed - Renogy 200 Watt 12 Volt Monocrystalline Solar Panel Starter Kit with 2 Pcs 100W Solar Panel and 30A PWM Charge Controller for RV, Boats, Trailer, Camper, Marine ,Off-Grid System - Renogy Deep Cycle AGM 12 Volt 100Ah Battery, 3% Self-Discharge Rate, 1100A Max Discharge Current, Safe Charge Appliances for RV, Camping, Cabin, Marine and Off-Grid System, Maintenance-Free --- ## 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/177529791-bestek-500w-pure-sine-wave-power-inverter-dc-12v-to](https://www.desertcart.jp/products/177529791-bestek-500w-pure-sine-wave-power-inverter-dc-12v-to) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-18*