Imagine wannabe, here...Ron, you can use any USB wall adapter (they're pretty standardized at 500 ohms), but the USB dongle though, you should use SI's.Quick question, Imagine. I have a wall adapter from another vendor. Is it okay to use it with my Volt? I don't wanna chance burning out the batt. Wall adapters were mentioned here, but I didn't see if it addressed that specific issue. thanks!