Recently, I wanted to make my arduino esplora more mobile, so I tried to take apart a Chinese usb power supply. It works ok, but it does not see enough draw from the Esplora. So it shuts off in 30 sec. Not sure what to do. I'd really like to keep this method to power it because I already have a case drawn up for it in Inventor. Is there a way to solder off the battery and get a new board for it to control battery power? Thanks.