Transforming your car into something a bit smarter doesn't have to cost a ton of money. The Bestek 150W DC 12V to 110V AC converter dual-USB power inverter is down to $11.99 with code 9GPCLY9K at Amazon. Without the code, it sells for $17, and today's deal is a match of the best-ever price. Amazon offers free shipping on orders over $25, though you can use your Amazon Prime membership or sign up for a free 30-day trial to skip the shipping fees as well. Note that this deal is only around for a limited time, meaning if you're interested, you might want to shop sooner rather than later.

This device is really simple to use. Plug it into your car's cigarette lighter outlet and convert that power into two USB ports and an AC outlet. The USB ports can automatically detect what device you are plugging in to provide the best possible charge, and the 110V AC outlet is strong enough to power larger devices like your laptop. There are multiple layers of protection, including a built-in safety door to keep prying hands safe, and safeguards against things like overcharging, overheating, and more. It also has voltage protection with low and high-pressure isolation. It comes with an 18-month warranty, and users give it 4.3 stars based on 212 reviews.

An AC converter isn't the only way to put your vehicle's lighter outlet to good use. You can also use it to power something like a Bluetooth FM transmitter or perhaps a discounted dash cam. Be sure to check out these awesome phone mounts while you're browsing, too!

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