12v adapter

Does anyone have a link to a good 9 vdc Auto adapter for a Whistler 1040? I seen some on Amazon with bad reviews.

So earlier this morning, I was running my BCD436HP on my car's battery using the "Serial Port" function so as to run down the AA batteries so if I needed to use it outside of the car, it would have some battery life. It was plugged in using the Uniden provided USB cable that was plugged into an...