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DesertGardener | Staff 39.8K Views
Aug 6, 2026 10:35 PM

BESTEK 300W Car Inverter DC 12V to AC 110V w/ 2x AC & 2x USB A

$20

$35

42% off
Amazon
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Deal Details
Update: This popular deal is still available.

BESTEK. via Amazon has BESTEK 300W Car Inverter DC 12V to AC 110V w/ 2x AC & 2x USB A (MRI3011BU) on sale for $26.99 - $7.56 with promo code 6JXXVHX7 at checkout = $19.43. Shipping is free w/ Prime or on $35+ orders.

Thanks to Staff Member DesertGardener for sharing this deal.
  • Note: You must be logged in to clip coupons or apply promo codes. Coupons/Promo codes may vary by account or may need to be re-applied in order to discount properly.
Details:
  • 300W continuous / 700W peak DC to AC power inverter, 11-17V compatible including Tesla
  • 2 AC outlets and 2×4.8A USB ports
  • Compact iPhone-sized design with 32-inch cigarette lighter plug
  • Built-in 40A fuse with protection against overheating, under/over voltage and short circuiting
  • Durable aerospace aluminum housing with smart cooling fan (silent until warmer or >70W output)
  • ETL certified
  • 5-year / 60-month product replacement warranty with 24/7 support

Editor's Notes

Written by megakimcheelove | Staff
  • At the time of this posting, our research indicates that this is $7.56 lower than the next best comparable online prices starting from $26.99.
  • This price matches our May '26 Frontpage Deal.
  • 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

Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available.

BESTEK. via Amazon has BESTEK 300W Car Inverter DC 12V to AC 110V w/ 2x AC & 2x USB A (MRI3011BU) on sale for $26.99 - $7.56 with promo code 6JXXVHX7 at checkout = $19.43. Shipping is free w/ Prime or on $35+ orders.

Thanks to Staff Member DesertGardener for sharing this deal.
  • Note: You must be logged in to clip coupons or apply promo codes. Coupons/Promo codes may vary by account or may need to be re-applied in order to discount properly.
Details:
  • 300W continuous / 700W peak DC to AC power inverter, 11-17V compatible including Tesla
  • 2 AC outlets and 2×4.8A USB ports
  • Compact iPhone-sized design with 32-inch cigarette lighter plug
  • Built-in 40A fuse with protection against overheating, under/over voltage and short circuiting
  • Durable aerospace aluminum housing with smart cooling fan (silent until warmer or >70W output)
  • ETL certified
  • 5-year / 60-month product replacement warranty with 24/7 support

Editor's Notes

Written by megakimcheelove | Staff
  • At the time of this posting, our research indicates that this is $7.56 lower than the next best comparable online prices starting from $26.99.
  • This price matches our May '26 Frontpage Deal.
  • 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

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83 Comments

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Aug 11, 2026 9:09 PM
422 Comments
Joined Jan 2014
DoomheraldAug 11, 2026 9:09 PM
422 Comments
Quote from mitsured View quoted comment :
He said "Truck" unless you own a truck you might not understand why calling a truck a car is an issue. God speed
Yeah! I once even heard him refer to his sneakers as shoes!
2
Pro
Aug 12, 2026 4:01 PM
285 Comments
Joined Jul 2014
spook02
Pro
Aug 12, 2026 4:01 PM
285 Comments
Quote from Madnjack View quoted comment :
A serious question, what is the use if this when we can charge phone directly from car usb...
I had to login to dislike this
Aug 13, 2026 2:47 AM
10 Comments
Joined Oct 2017
jjfnj4lawAug 13, 2026 2:47 AM
10 Comments
This deal is for a "modified" sine wave inverter. Its best use is for:
Incandescent or simple LED lights
Small fans
Small TVs
Simple tools with brushed motors
Basic battery chargers banks
**Not cell phones**
- Pure Sine Wave is best for phones and other sensitive electronics. https://a.co/d/09lZ43Gd
Last edited by jjfnj4law August 12, 2026 at 07:50 PM.
Aug 13, 2026 8:11 PM
12.1K Comments
Joined Oct 2005
jbloggsAug 13, 2026 8:11 PM
12.1K Comments
Quote from DealsofDeals View quoted comment :
Code worked on higher version as well got the 65w one
Isn't the following a better deal, 400W and PD65W?https://a.co/d/0cnScRcV
Deal Editor
Aug 14, 2026 6:15 PM
17K Comments
Joined Nov 2008
megakimcheelove
Deal Editor
Aug 14, 2026 6:15 PM
17K Comments
This deal is still available
Aug 14, 2026 6:26 PM
23 Comments
Joined Sep 2023
elleoohAug 14, 2026 6:26 PM
23 Comments
I got this before. It drained my toyota Prius battery. Not worth the risk of getting a new car battery. I bought a portable multi port battery block that's runs on ac and dc instead. Very glad I switched!
1
Aug 14, 2026 6:46 PM
628 Comments
Joined Dec 2008
robertsmAug 14, 2026 6:46 PM
628 Comments
Quote from Dragonsnack View quoted comment :
Oh, really. Hmm, I wonder if there is a way to get receipts for old purchases from the store?
Menards has a self-serve station in their entryway where you can swipe a credit card and print out receipts for previous purchases made with the card.
1

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Aug 14, 2026 8:18 PM
2.3K Comments
Joined Dec 2009
itsme13Aug 14, 2026 8:18 PM
2.3K Comments
i have one of these, and have been using it daily for about a year. they work well. I had paid $25 for it.
have a wyze camera connected to the usb port, and have two regular wifi led bulbs which switch on every night.
Aug 14, 2026 8:20 PM
2.3K Comments
Joined Dec 2009
itsme13Aug 14, 2026 8:20 PM
2.3K Comments
Quote from jbloggs View quoted comment :
Isn't the following a better deal, 400W and PD65W?https://a.co/d/0cnScRcV
different manufacturer. the one op posted is ETL certified and comes with 5 years warranty
Aug 14, 2026 8:22 PM
2.3K Comments
Joined Dec 2009
itsme13Aug 14, 2026 8:22 PM
2.3K Comments
Quote from jjfnj4law View quoted comment :
This deal is for a "modified" sine wave inverter. Its best use is for:
Incandescent or simple LED lights
Small fans
Small TVs
Simple tools with brushed motors
Basic battery chargers banks
**Not cell phones**
- Pure Sine Wave is best for phones and other sensitive electronics. https://a.co/d/09lZ43Gd
Cell phones can be charged via USB port it gives a pure DC voltage. Even if using a power brick the 110 -120V AC is converted to pure DC voltage.
Works the same for laptops.
Aug 14, 2026 8:23 PM
36 Comments
Joined Jan 2020
NeatCatfish160Aug 14, 2026 8:23 PM
36 Comments
Quote from TACO_Trader View quoted comment :
Shockingly no one ha mentioned sine wave.
Agree. Using for lights not a big deal but with phones, computers and other sensitive electronics: definitely pure sine.
Aug 14, 2026 8:33 PM
7 Comments
Joined Oct 2022
CheapskateTXAug 14, 2026 8:33 PM
7 Comments
Quote from tech_turtle View quoted comment :
The USB ports on this are mostly for charging phones etc while you also need the plugs, so you don't have to alternate what's using the cigarette lighter port. The main thing I've used one for is charging a laptop while on the road. These are also useful in power outages as a temporary generator (this one is not powerful enough to run a fridge though).
Back seat TV with gaming system and surround sound. Long trips!
Aug 14, 2026 8:35 PM
8 Comments
Joined Jun 2025
TheUniclopsAug 14, 2026 8:35 PM
8 Comments
Just picked it up!
Aug 14, 2026 8:46 PM
883 Comments
Joined Nov 2013
sixtyfpsAug 14, 2026 8:46 PM
883 Comments
I don't normally make fun of poor *-to-English translations for manuals and ad copy, but I thought it was funny to see "Bestek: Your cerficated choice" in the last graphic
1

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Aug 14, 2026 10:11 PM
7.2K Comments
Joined Dec 2014
AkujunkanXAug 14, 2026 10:11 PM
7.2K Comments
Quote from Madnjack View quoted comment :
A serious question, what is the use if this when we can charge phone directly from car usb...
For actual efficiency, AC inverters should use around 90% of their total capacity to drive. Using a smaller inventer to match the power requirements saves power/battery. A 2000 watt inverter using the same battery source as a 300 watt inverter will be 75% efficient driving a 280watt device. Meanwhile a 300 watt inverter driving a 280 watt device will be 90% efficient.

This is great to maximize battery life. And it's a great reason to not use a self contained Power Station if you aren't solar charging..

(There are plenty of reasons to still choose it so not worth quoting me on this)

TLBig GrinR, different devices for different people.

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