QUOTE(deyamato @ Sep 12 2012, 01:04 PM)
i got my yoobao powerbank just arrived my house , so i just plugin to vita will be start charge or have to mod something ?
p/s : the vita not with me will try tonight

hey bro , mind to tell how u do it ? i tried usb to laptop like wont help me charge even i done the setting usb charge

I will charge, just that it won't have any indicator/icon to show that it is charging, you want to solid proof, turn your Vita completely off, then plug it in, you will notice the Playstation button turn Orange, it is charging.
or, if you still want to confirm that it is being charged when it is on, just plug it in when it has 1/4 bar of the battery left, then continue to play games for an hour or so, then you check the battery icon, it will probably be 2/4 or 3/4 bar by then.