If you happen to be looking for an inverter to change your car power’s voltage to regular mains, then this Bestek inverter on the left may be what you need. While it does get 4.4 stars, which is pretty good, and that is caused by 75% of 5 star reviews, 10% of the reviews are not so good. I can’t assess what the reason for the negative reviews is. The 400-Watt version seems to do a better job, even though it also gets 4.4 stars in total. Also, it has 4 USB ports, while the other one has only 2.