Logitech Ergo Series - Page 9

The Power LED on top of Ergo K860 indicates when the keyboard is turned on (green)
and will turn red when the battery level is low (When the battery is low, the red light
will stay lid for 20 seconds and then turn off).
LED Color
Indications
Green
From 100% to 10% charge
Red
10% charge or below
* Battery life may vary depending on usage and operating conditions.