01 / Battery Power Level
To check the battery power level of the mouse, turn the power switch to OFF and back to ON. This will activate the power level indicator by 4 round blue LEDs below the power symbol, each LED represents appox. 20% of usable power. The number of LED’s that light up indicates how much power is remaining. For example, if 3 LED’s lights up, this means more than 60% of usable power is remaining.