BESTEK Pure Sine Wave Power Inverter - 300W Car Plug in Charger Outlet DC 12V to 110V AC - Cigarette Lighter Adapter 4.8A Dual USB Fast Charging Ports for Phone, Laptop, CPAP - Black
Condition: New
Buy Now, Pay Later
As low as
$9
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Sunday, Jul 19
Recently Viewed
Color: Black
Features
- BESTEK 300W Pure Sine Inverter (Patent Number US D818,853 S): Designed for your devices that require careful protection, provide 300W continuous DC to AC power and 700W of peak power featuring 2 AC outlets and 2 USB charging ports, great for Christmas gift, charging string lights, laptop, speakers, camera, nebulizer, game console, kindle, iPad and other
- 2*AC and 2*USB Fast Charging Ports: Equipped with 2 Smart USB charging ports, which detects your devices automatically to deliver its fastest charge speed up to 2.4 amps per port/4.8 amps max, and you can charge most phones and tablets simultaneously
- Upgraded Version Compatible with Tesla: Bestek power inverter upgraded to 11-17V, Compatible with Tesla and other new energy vehicle. Unique vents and smart fan design make our 300W power inverter easier to dissipate heat, and cigarette lighter plug is easy to plug into a cigarette lighter socket
- Comprehensive Protection: Built-in 40 amps fuse and full protection against overheating, under and over voltage charging, short circuiting, overloads, and overcharging
- What You Get: 1*BESTEK 300W Pure Sine Power Inverter, 1*User Manual, 18-month warranty and customer service
Description
300W Pure Sine Inverter 150W Power Inverter 300W Power Inverter 300W Power Inverter PD 400W Pure Sine Inverter 500W Pure Sine Inverter 1000W Pure Sine Inverter
Brand: BESTEK
Recommended Uses For Product: Vehicle
Power Source: DC Powered
Wattage: 300 watts
Model Name: MRZ3011HU
Power Source: DC Powered
Wattage: 300 watts
Voltage: 12 Volts
Number of Outlets: 4
Input Voltage: 12 Volts
Output Power: 300 Watts
Standby Power Shutoff: High
Output Voltage: 120 Volts
Peak Output Power Watts: 700
Inverter Capacity Volt-Amp: 462
Electrical Output Waveform: Pure Sine Wave
Frequency: 60 Hz
Item Dimensions L x W x H: 8.1"L x 5.3"W x 2.6"H
Item Weight: 1.4 Pounds
Brand: BESTEK
Antenna Location: Vehicle
Model Name: MRZ3011HU
Built-In Media: 300W Power Inverter User Manual
Model Number: MRZ3011HU
Mfr Part Number: MRZ3011HU
Unit Count: 1.0 Count
Manufacturer: BESTEK
Energy Specifications Met: ETL, RoHS, FCC
Color: Black
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jul 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Color: Black
Works well and the fan is quiet. Before buying, you have to understand this particular product provides 300 watts total, not per outlet. However, you still have to calculate the total watts you plug is going to provide. A 20amp cigarette lighter plug in a 12 volt vehicle provides 240 watts total (20A x 12V = 240 watts). So check your vehicle manual fuse chart to verify the size fuse the cigarette lighter uses to calculate what you are getting out of the lighter. DO NOT increase the fuse size to meet your needs. If you needed all 300 watts, there are kits available to wire directly the battery.
...
show more
Reviewed in the United States on February 17, 2026 by RetiredNLovingIt
Color: Black
This worked excellent for 30+ hour road trip in a Prius using a Starlink mini. It runs quiet. I've had no issues whatsoever so far.
Reviewed in the United States on May 27, 2026 by Raja
Color: Black
I'm an experienced EE by profession and education, a mixed-signal RF/analog/digital guy, and I tested this unit six ways to Sunday (i.e. extensively, see images). It does everything the brochure says it will do, and fully loaded (okay, almost fully, 253 watts of incandescent load), it runs quietly and stays cool as a cucumber. Make that a fresh refrigerated cucumber from where? Whole Foods, of course. Output voltage regulation is excellent; I tested it from 10 VDC in to 14.4 VDC, and it sags only a little, from 114 VAC RMS down to 110 VAC RMS. Your attached appliances will never know the difference. Mine clocked in at 59.99 Hz from 14V in, 60.02 Hz at 10V in; again, your appliances will never know the frequency difference, as frequency regulation is excellent. I ran FFT on the sinusoidal output to check harmonics; the highest was the 4th at 40 dB down. The sinusoidal output is very pure, very clean. Ever the curious one, I took a look inside. Four TO-220 nicely heat-sinked switching FETs (presumably) operating in tandem to drive a series toroidal inductor/capacitor low-pass (shaping) filter. The switching frequency is right at 25 kHz, and pulses range from 760 nS up to whatever width is required to maintain the waveform, depending on load and phase angle. I measured this on the driven side of the L/C output filter, see pics. This unit does generate some hash in the AM radio band, no surprise. It might generate RF noise at higher frequencies including the HF bands (I didn’t test that; hey, this is a free product review), but if you’re a ham radio operator, you’re probably running off of batteries if you need low noise. It’s probably within FCC Part 15 unintentional radiator limits; I didn’t test conducted or radiated emissions either. I bought this unit because my DJI drone battery chargers (3 different drones, 3 different chargers) refused to recognize my older “modified” sine inverters as providing useful AC power. I don’t blame them; whoever named it “modified sine wave” definitely worked in marketing, not engineering. And they’re rude. All of my DJI chargers work fine with this Bestek Sine unit, and why wouldn’t they? They’re being fed a swell, 60-Hz sine wave, just like at home. I highly recommend this unit. It’s internally fused, so you’ll have to do some soldering if you pop the fuse. You need to remember that 300 watts at 120 VAC is only 2.5 amps, but at your 12V input, it’s 25 amps assuming 100% conversion efficiency. Assuming a realistic conversion efficiency north of 80%, that’s 30 amps. Many automotive cigar lighters are fused at 10A. Never replace a 10A fuse with a 30A fuse to keep it from popping. There’s a reason auto manufacturers made that a 10A fuse, and it’s the wiring between your battery/charging system and the cigar outlet. Don’t turn your car into a crispy critter by upping any fuse, certainly not this one. If you need 300W, either make sure your car or truck cigar lighter fuse can handle the 30A, or buy some healthy alligator clips and attach this unit, via dual inline 30A fuses, directly to your battery. It’s also worth noting that most automotive alternators will produce about 50 amps at idle. I plugged three 100W incandescent bulbs to my Bestek 300 W Sine Wave inverter and read 253 watts on my handy Kill A Watt P3 test instrument. I attached it to my 36 AH fishing-motor battery and ran it for several minutes with no discernible heating of the inverter casing or the air at its vents. I also attached my iPhone to the USB output, and the USB outputs on this unit are indeed wired to charge iPhones (proper resistor-divider values on the USB data pins). It measured 1.56A into my iPhone, probably current limited by the phone, for a nice fast charge. The fan seems to have two speeds: modest and off. When operating, it’s fairly quiet. As you might expect, whether the fan runs or not is not so much affected by load; most of the power dissipated in switch FETS is related to moving charge and intermediate resistance value during transitions, not to Rdson losses. Assuming these are FETs (highly likely). I tested low-voltage and overvoltage cutoff points, and found that the unit had hysteresis at both ends, as any good design would. The unit I examined would cut off at 9.77 volts and would stay off until voltage rose to 10.994 volts. For overvoltage, the unit would trip off at 15.57 volts and start back up when voltage dropped below 15.000. Unlike another reviewer, I did not note any beeping sound from the unit when input voltage dropped too low. Note that common wisdom for lead-acid batteries and gel cells says not to take them below 11.6 volts/no load. I’m not sure how that translates to loaded voltage, but exercise caution if running this thing at full load for an extended time repeatedly from a battery that is not being charged. I’m going to give this unit an A+, and I’m a hard grader. And $45.99? At that price point, you may not expect much: you’ll be pleasantly surprised with this Bestek unit. Worth every penny. And no, I’m not on the company’s payroll; just pleasantly surprised and impressed with this unit’s design excellence and manufacturing quality. That and I was a little bored today, thought I would take some measurements and share my insights. Can you tell? :)
...
show more
Reviewed in the United States on March 15, 2021 Reviewed in the United States on March 15, 2021 by Staccato von Tosh
Color: Black
Most important things to know about why I bought this and what I think of it.... 1. I built a small battery box to power a mini PC and a couple lights during relatively short power outages. I don't think the mini PC necessarily absolutely has to have a pure sine inverter but the price difference between an inexpensive modified sine wave inverter and this pure sine wave inverter is small enough that it sure can't hurt to just get the pure sine. 2. My knowledge on electronics is a bit shaky but what I do know is that I have a fan that does not run well on modified sine wave inverters. It's motor makes an ugly buzzing sound when it's connected to one of those. So I can't run a fancy test on this to verify that it is definitely pure sine wave. However, the first thing I did was plug up that fan to it and the motor runs exactly as quietly as it does when it's plugged into a house outlet. This tells me that most likely, the pure sine wave claim is as accurate as it needs to be for the price. And maybe even better for all I know. 3. I don't really have any complaints on the fact that this inverter can't be connected any other way than through the hardwired cigarette lighter plug. That is (after all) what kind of a connection I was looking for. But I personally wouldn't try to pull 300 watts through that plug. Lucky for me, I don't ever intend to. Everything I intend to run off of this inverter totals less than 60 watts. If you are looking for anything near the 300 watts (or more), I would personally be prepared to spend more. So far, I've tested it up to 3 hours running the 50 watt load continuously off of a 20 AH lithium battery. No problems to report as near as I can tell. Since I already had the battery with a cigarette lighter socket wired to it, this is a very inexpensive way to have a little bit of emergency power to keep lights on and check the news during power outages on a full sized screen without squinting at my phone. The one minor complaint I have is how it was shipped. It was shipped in a box that's barely big enough for the item and so, the non-removable power cable was bent at a 90 degree angle that left a kink in it after being unwound. This could have easily been avoided by simply making the box a little larger and not bending the power cable at an extreme angle just to make it fit in the box. Considering that the cable can't easily be replaced, the last thing you want is anything that even slightly damages it. I'm nitpicking though. This inverter fits into a fairly specific niche. Many people are probably looking for more power and versatility. I just don't need more than about 100 watts.
...
show more
Reviewed in the United States on May 31, 2025 by Brian
Color: Blue
Works great. Great for low power devices.
Reviewed in the United States on May 7, 2026 by Roger
Color: Black
It performed well enough for a 6-hour drive with the Dell laptop fully in use and plugged in.
Reviewed in the United States on April 18, 2026 by Oscar Akben
Color: Black
For what I plan on doing with this, it will work just fine. It is nice and compact and the fan is quiet. It will not work with my 4000 peak amp jump starters when I plug into the 12 volt 10 amp connector. Evidently, the internal electronics of the jump starters think the inrush current is an overload and shuts down. I ordered a couple of Milwaukee type 12 volt tool batteries with an adapter to connect to and wired it to the cigarettes connector and now it works fine. It would be nice if they could add circuitry to reduce the inrush current. The sine wave is very good. The frequency is right at 60 hertz and very clean and the voltage is at 111 VAC. Turn on the unit before plugging in anything to it. It take a second or two to stabilize.
...
show more
Reviewed in the United States on March 29, 2026 by Ernie
Color: Black
Keeps my gaming laptop topped up on power when I'm traveling on the road. Now I don't need to drop by libraries or cafes to charge up. Plugs right into the 12v cig lighter and you simply flip a switch. The price is really good too ($40), considering what these sell for elsewhere/locally. The "pure" sine wave spec is also much appreciated (over "modified" sine wave) to give a more consistent flow of power. Couldn't ask for a better mobile power solution. No extra batteries needed.
...
show more
Reviewed in the United States on December 6, 2025 Reviewed in the United States on December 6, 2025 by Jon