No display when unplugging usb cable

[moccow]

I just purchased M5Stack Basic v2.7.
When I check M5.Power.getBatteryLevel(), it is 100%, but when I unplug the usb cable, the display does not show up.
How can I get the display to show up even when the usb cable is unplugged?

[felmue]

Hello @moccow

starting with v2.7 there is a battery power switch at the bottom. See here.

To run from battery (or to charge it) the switch needs to be in the on position.

Thanks
Felix