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travisshyn 11.3K Views
Oct 19, 2026 1:50 PM

400W BESTEK Car Power Inverter 12V to 110V w/ 2AC & USB-C/USB-A Ports

$23

$50

54% off
Amazon
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Deal Details
BESTEK. via Amazon has 400W BESTEK Car Power Inverter (MRI4011CU-PD30) on sale for $32.98 - $9.89 (apply promo code X8L7TK2D at checkout) = $23.09. Shipping is free with Prime or on $35+ orders.
  • Note: You must be logged in to clip coupons and apply promo codes; some codes may be one-time use and may not apply consistently.
Thanks to community member travisshyn for finding this deal.

Features:
  • Equipped with dual 110V AC outlets and USB-C (PD 30W)/USB-A (QC 3.0) ports
  • 32-pin cigarette lighter plug allows it to fit into almost any vehicle
  • Equipped with a built-in 40-amp fuse to protect your devices
  • ETL-certified, ensuring safety and quality

Editor's Notes

Written by megakimcheelove | Staff
  • Our research indicates that this offer is $23.90 lower (51% savings) than the next best available price from a reputable merchant with prices starting from $46.99.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.    
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by travisshyn
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
BESTEK. via Amazon has 400W BESTEK Car Power Inverter (MRI4011CU-PD30) on sale for $32.98 - $9.89 (apply promo code X8L7TK2D at checkout) = $23.09. Shipping is free with Prime or on $35+ orders.
  • Note: You must be logged in to clip coupons and apply promo codes; some codes may be one-time use and may not apply consistently.
Thanks to community member travisshyn for finding this deal.

Features:
  • Equipped with dual 110V AC outlets and USB-C (PD 30W)/USB-A (QC 3.0) ports
  • 32-pin cigarette lighter plug allows it to fit into almost any vehicle
  • Equipped with a built-in 40-amp fuse to protect your devices
  • ETL-certified, ensuring safety and quality

Editor's Notes

Written by megakimcheelove | Staff
  • Our research indicates that this offer is $23.90 lower (51% savings) than the next best available price from a reputable merchant with prices starting from $46.99.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.    
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by travisshyn

Community Voting

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Top Comments

Alchemic
344Comments
96Reputation
be advised that many car's 12v cig outlet can't handle 400w and will blow a fuse.
Go to Comment
SlyderDeals
15.5KComments
1.3KReputation
FYI, when applying coupon codes in the Amazon app, you need to tap on the arrow at the end of the coupon field to get it to apply. It's very easy to miss that.
Go to Comment

Community Reviews

BESTEK's 400W car power inverter is a compact 12V-to-110V adapter that works well for light electronics like laptops and phone chargers, and the hard-wired plug makes it easy to use in the car. The input range of 11 to 17 volts also fits a Tesla low-voltage battery. The main caution is power draw, since many cigarette-lighter circuits and fuses cannot safely handle 400W, and the unit may blow a fuse if the load is too high. It is best suited to modest charging needs rather than heavy appliances.

  • The inverter can charge a laptop even when the output waveform is modified rather than pure sine.

    robertsmtrkndude299

  • The coupon code can fail on the first attempt in Amazon, but refreshing and reapplying can make it work.

    travisshyn

  • The inverter's 11-17V input range can fit Tesla LVB compatibility needs.

    SmilingShape376

  • The cigarette-lighter connection is hard-wired on this model, which can simplify setup compared with clip-based connections.

    trkndude299

  • Vehicle fuse ratings can limit safe use, since a 20A or 15A fuse may be inadequate for the inverter's higher draw.

    testshoothondaman82clinteastwood

  • A modified-wave output can prevent some solar battery setups from turning on and can slow recharging via 12V.

    trkndude299trkndude299

  • Many cars' 12V cigarette outlets cannot handle 400W and can blow a fuse.

    Alchemic

  • The stated 40A input current can exceed typical lighter circuit limits, which may require heavier wiring than most cars use.

    arons

Common Questions (3)

AI-generated summary based on comments from the community. Updated ago

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22 Comments

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Oct 22, 2026 10:08 AM
473 Comments
Joined Jan 2007
rainlakeOct 22, 2026 10:08 AM
473 Comments
Quote from trkndude299 View quoted comment :
I have 2 of the older 300w pure sine wave inverters. They are not pure sine, they are modified sine wave, even though they were advertised as a pure sine device. They 140w charge my laptop, and my phone just fine, but my solar battery won't even turn on because of the dirty wave. And recharging the solar battery takes close to 30 hours via a 12v plug.
Are not solar batteries charged on DC?Probably it draw too much
Oct 22, 2026 1:18 PM
325 Comments
Joined Dec 2010
tonightOct 22, 2026 1:18 PM
325 Comments
Quote from Alchemic View quoted comment :
be advised that many car's 12v cig outlet can't handle 400w and will blow a fuse.
I have this problem with my backup tire inflator (I have a battery driven jumpstarter combo as my first option) and my solution was to get a socket that clamps directly to my battery and has its own higher amp fuse.Alternately you could always just upgrade the one in your fuse box but I find it comforting to have it as-is for daily use stuff. But the direct attachment has become handy for my inverter occasionally too.
Oct 22, 2026 3:18 PM
3.8K Comments
Joined Dec 2008
clinteastwoodOct 22, 2026 3:18 PM
3.8K Comments
Quote from tonight View quoted comment :
I have this problem with my backup tire inflator (I have a battery driven jumpstarter combo as my first option) and my solution was to get a socket that clamps directly to my battery and has its own higher amp fuse.Alternately you could always just upgrade the one in your fuse box but I find it comforting to have it as-is for daily use stuff. But the direct attachment has become handy for my inverter occasionally too.
You can also just buy a tire inflator that clamps directly to battery, Viair 88p does. That is not as cheap as the 12v cig units though.
Oct 22, 2026 4:45 PM
55 Comments
Joined Mar 2026
SmilingShape376Oct 22, 2026 4:45 PM
55 Comments
FYI, the input range is 11-17v so it's compatible with Tesla LVB. Not a bad budget deal, but pure sine wave inverters are oftentimes ideal, depending on your use case.
Oct 22, 2026 8:36 PM
1.2K Comments
Joined Oct 2018
trkndude299Oct 22, 2026 8:36 PM
1.2K Comments
Quote from rainlake View quoted comment :
Are not solar batteries charged on DC?Probably it draw too much
They can be charged on DC. The solar battery wont even turn on because of the modified wave.
I'm surprised it charges my laptop because of the modified wave, but it does that great.
Oct 23, 2026 7:29 PM
2.1K Comments
Joined Nov 2010
testshootOct 23, 2026 7:29 PM
2.1K Comments
Quote from arons View quoted comment :
Yikes, 40 amp input current? I don't know any cars that can handle that. That would require 8 gauge wire to the lighter. They are usually 10 or 15 amps.
All the cigarette lighter fuses I have worked with were 20a. Inadequate for a device that can pull 34a.
Oct 23, 2026 7:36 PM
3.5K Comments
Joined Nov 2005
hondaman82Oct 23, 2026 7:36 PM
3.5K Comments
make sure your 12V fuse can handle 400W... most usually do 20A which should max at 200W to be safe

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