| | Re: Charging Mobile Phone via Car's Audio System USB Port. Safe Enough?
It will be very slow, since the max o/p current will be quite small compared to what the phone needs to charge in a reasonable time. Normally USB hosts have a mode to protect themselves when the current draw exceeds their limits, assuming the same is there in your unit safety wont be a problem but charging rate will be.
Last edited by ViMo; 11th June 2013 at 11:42 PM.