08-01-2016, 11:56 AM
I believe the enable line of the LPW5210B5F in the USB +5 supply should have been wired back to VBUSEN on the AXP803. The way it is wired now, if you hit the power off button it leaves the +5V on when on battery supply. This will drain the battery while the unit is off. If enable had been wired to VBUSEN the AXP803 would have been able to shut off the +5V supply when powering off. This should be a programmable choice since when on AC power you want to leave the USB +5V on so that a mouse/keyboard can be used to wake the device up.