It doesn’t have to cost a ton of money to turn your car into something a little smarter. Bestek’s dual-USB power inverter 150W DC 12V to 110V AC is down to $11.99 with Amazon’s 9GPCLY9K code. It sells for $17 without the code, and today’s deal is the best-ever price match.

Amazon offers free shipping on orders over $25, although you can also use your Amazon Prime membership to skip the shipping fees or sign up for a free 30-day trial. Note that this deal is only around for a limited time, meaning you may want to shop sooner rather than later if you’re interested.

It’s really easy to use this device. Plug it into the lighter outlet of your car’s cigarette and convert it into two USB ports and an AC outlet. The USB ports can automatically detect which device you are plugging in to provide the best charge possible, and the 110V AC outlet is strong enough to power larger devices such as your laptop. There are multiple protective layers, including an integrated security door to keep prying hands safe, and safeguards against things like overloading, overheating, and more. It also has low-and high-pressure insulation voltage protection. It comes with an 18-month warranty based on 212 reviews, and users give it 4.3 stars.

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