There are a few ways to check your Lief device's charge status:
Lief device is on your body, without Lief App:
Single-tap the center of the device. If you feel it buzz, it's powered on.
If the battery life is low, a message will appear in the top of the app indicating such.=
Lief device is off your body:
With the device in your hand, single-tap the center of the Lief device. An LED will shine for 3 seconds indicating the charge status (Red = Low Charge, Green = High Charge).
Place two thumbs on the Left and Right metal sockets, respectively. This simulates placing the Lief on your body. If you feel a "buzz" that means the Lief has a charge. When you remove your thumbs from the metal sockets, this simulates taking Lief off your body. An LED will shine for 3 seconds indicating the charge status (Red = Low Charge, Green = High Charge).