My 2011 Buck Regal Turbo has a USB port to connect an MP3 player like an iPod, as well as being able to access the onboard 40GB hard drive. I've yet to take advantage of the USB port. However, today I was thinking and assumed that I should be able to power and charge batteries in my PSR-800 via the USB port. My assumption was correct. Anyway, I just wanted to share this with others who may have a USB port in their vehicle, as this is another option to power your PSR-800 (or other scanners) in your vehicle, especially if you don't have access to a vehicle power/charger adapter.