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Right now you can pick up this portable 12-volt DC to 110-volt AC converter—normally $40—for less than $20.

Car power inverters are pretty common, but most take up a lot of space on your floorboards. If you're lucky, you can slide yours under the front seat, but if not, it's like lugging around a cinder block.

No longer. Right now this portable 12-volt to 110-volt power converter, small enough to fit in a cupholder but strong enough to power several devices at once, is marked down to $18.69. That's $21.30 below its normal retail price.

Measuring just 3.2 by 1.5 by 2.5 inches, this mighty mite sits snugly in most center-console cupholders. It's got four USB ports—two high-speed 2.1-amp ports and two 1-amp ports—and a typical 110-volt, three-pronged plug for powering GPS devices, dashcams, or even your laptop or game console. It can power multiple electronic devices at once and weighs less than a pound.

Perfect for family road trips, commuters, and job-site travel, this small power plant by Bapdas is ideal for powering all your devices. It's got full protection against surges, overcharging, overheating, and more. And there's a handy slot on top for storing credit cards and driver's licenses.

Of course, this little inverter won't power larger appliances like seat-top refrigerators or tools like circular saws. But it should provide plenty of juice for small corded items such as car vacuum cleaners.

Prices change often on Amazon, and with Prime Day coming up July 12–13, this hot item won't stay 53 percent off for long. Head over to Amazon today and pick it up before it goes back up to 40 bucks!

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