5V GPIO max current

Hello everyone,

I need to recharge a 5V battery from the lattepanda Alpha with 1A or maybe 2A
Does someone know how much current can I draw from the 5V lines on GPIO ports ?
I see two lines :
- The one with USB pins near 12V DC
- The one near 3.3V pins
They are connected when I use multimeter, but is the 5V-USB protected with a 500mA fuse ?

Thank you