There are several vendors for the Mobley power adapters on Amazon and eBay. Most say they work on cell phone chargers and computer USB ports. If you use a quality USB charger there should be no problem as under the most power consumption mode, the Mobley draws less than 300ma. Most of the USB to 12 volt adapter are rated at 750ma or more. It usually is dependent on the capacity of the USB charger.
Here is a vendor on eBay offering a kit that gives you 120 vac, 12 vdc and USB to Mobley for $45 plus $5 shipping.
Mobley power adapter kit 120vac, 12vdc and USB on eBayAs to the throttling on congested towers, it is really a moot point, because by definition, a congested tower means everyone will be slowed down.
