Quote:
Originally Posted by oldyellr
The spec for USB port power is 500ma. The Vox charger output is 2.0 amps (2000ma). Computer USB ports are not intended to be 5 volt, 2 amp power sources. It's as simple as that. Vox isn't the only device that won't charge from a standard 500ms USB port. However, it is a shame that it won't even trickle charge if you're prepared to wait half a day.
It's sort of like trying to charge a Tesla electric sports car from a 115 volt 15 amp wall outlet. Or cooking a meal for half a day and it's eaten in 15 minutes.  |
Hopefully within a few years, the specs for USB will be updated to provide more than .5A to .9A (current specs for USB2 & 3) on the USB port and keep them live, even when the computer is turned off - and some already do that - so we can charge our monster cell phones, tablets or e-readers...
