Need to be soldered for 3.3V regulator to work

Green: Disable powersave feature on TPS61201.

Yellow: Enable powersave feature.

De solder to enable under voltage shutdown. (Good for shutdown on low battery to prevent deep discharging of lithium batteries)

Solder to enable 3.3V regulator. (can be used to connect to something for switching on and off)

Solder to enable lithium charging.

Solder to enable deep sleep.