Customers love the M140BUC 140 W Power Inverter's overall performance, charging speed, compatibility, and portability. Users appreciate that it offers a quicker charge than previous devices and accommodates both old and new cords. However, some customers have noted concerns about the noise level and heat dissipation. Some users have mentioned that the device overheats and has an odd fan noise.
This summary was generated by AI based on customer reviews.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 1 Showing 1-20 of 71 reviews
Rated 5 out of 5 stars
Great for Using your Hair Dryer in the Car
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great quality, great build for this portable power inverter. Added bonus of a USB-A and USB-C port. Hopefully it will last for atleast 10 years like my last one.
I would recommend this to a friend
Pros mentioned:
Charging speed, Overall performance
Rated 5 out of 5 stars
Powered me right back up!
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This baby works amazingly. It powered me right back up and charged my laptop back to 100% within no time. I had no power loss or fluctuations while I was plugged in working from my personal vehicle. Another plus is the product is not loud like some of the other power inverters I have previously owned.
This was a great buy for a great price!
I would recommend this to a friend
Pros mentioned:
Overall performance, Size
Rated 5 out of 5 stars
This convertor works great
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I like the compact use of this converter. It really makes things handy. And works great.
I would recommend this to a friend
Pros mentioned:
Charging speed, Overall performance
Rated 5 out of 5 stars
A Must-Have for Charging Laptops on the Go
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Highly recommended: In the absence of an affordable alternative for charging laptops in the car, this device is a game changer. It is reliable, cost effective, and perfect for keeping your laptop powered while traveling or as a convenient extra charging option. I have gotten a ton of use out of it and it is definitely worth having on hand.
I would recommend this to a friend
Pros mentioned:
Overall performance
Rated 5 out of 5 stars
great product!
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
doesnt drain my battery, been very reliable. having an older car this helps
I would recommend this to a friend
Pros mentioned:
Charging speed, Compatibility
Rated 5 out of 5 stars
Preliminary review: works well and is fairly quiet
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I've used it a couple times on long trips with my USB-C charger to my iPhone 16 and it was quieter and a quicker charge than a previous device (different company) I used. Charging my Mac one time a long time ago worked too. (Extra pro tip: just be aware that the block for a Mac charger may be too big to plug in your phone at the same time.)
Thankful for this product and I'm glad I bought it!
I would recommend this to a friend
Rated 4 out of 5 stars
Work day life saver!
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
It works well even though it is a bit bulky. I needed a car charger that could support charging a laptop after a recent power outage. My work laptop only has about an hour and a half battery life and I felt this power outage wasgoing to be a while. I wasn't wrong. I had back to back zoom calls all afternoon. The laptop is an older model so it doesn't use a c-port to connect to power, I needed something that had a 3 prong outlet as well. This did the trick. It didn't over hot. I was in my car for 4 hrs using this item and don't regret getting this item. It saved my work day.
I would recommend this to a friend
Pros mentioned:
Charging speed
Cons mentioned:
Noise level
Rated 5 out of 5 stars
Powers my laptop on the go
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Posted . Owned for 2 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I agree with some of the other comments that it is not quiet when charging after a while but it charges my laptop like it is plugged into the wall. I would suggest this to someone who wants access to a plug in your car that is used on occasion.
I would recommend this to a friend
Pros mentioned:
Size
Rated 5 out of 5 stars
Simple and effective Inverter
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This is a great little unit. Compact yet powerful. I like that it still has a legacy type A USB and type C. It works very well in my vehicle and is pretty quiet.
I would recommend this to a friend
Pros mentioned:
Overall performance
Rated 5 out of 5 stars
Just what we needed
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This inverter was just what we needed. We were traveling and needed to have electricity available in the van. We plugged it in and it did all the work! Simple. Easy. Excellent.
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Extremely satisfied customer!
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This was a great purchase! I absolutely love the fact that I can charge my laptop and any other devices that needs a wall socket.
I would recommend this to a friend
Pros mentioned:
Overall performance
Rated 5 out of 5 stars
Great for on the go.
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Posted . Owned for 1 year when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great for on the go use for Laptop! worked with my laptop flawlessly
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Great quality
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This product is powerful and reliable! It charges my laptop quickly.
I would recommend this to a friend
Pros mentioned:
Overall performance
Rated 5 out of 5 stars
Great
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Works great. Works great. Works great. Works great.
No, I would not recommend this to a friend
Pros mentioned:
Overall performance
Rated 5 out of 5 stars
Car charger
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Works great. I found multiple car chargers like this. This one seems to work very well not overheating not blowing out my outlet.
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Perfect
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Allowed me to work while traveling and keep my laptop charged
I would recommend this to a friend
Pros mentioned:
Overall performance
Rated 4 out of 5 stars
Clutch For the Car
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Posted . Owned for less than 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
still testing it so review may change. first impressions are its a bit bigger and clunkier than i had anticipated. The plastic could be more rugged but overall enjoying it so far
I would recommend this to a friend
Pros mentioned:
Overall performance, Portability
Rated 5 out of 5 stars
Charger
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Reliable and works great, compact/portable. Great to use in the car.
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Great value!!!
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Charged items fast and very good for on the road or remote workers
I would recommend this to a friend
Pros mentioned:
Size
Cons mentioned:
Noise level
Rated 5 out of 5 stars
Great!
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
For such a small device, it wasn’t very loud and packed enough power to charge computers tablet, et cetera.