iRobot Mint 4200 - Manual (Page 17)

PAGE 17
The NorthStar Navigation Cube
The Cube uses 2 C batteries. The battery door can be found on the bot-
tom of the Cube.
These lights appear on the power button when the charger is plugged in:
Power Button
Charging Indicators
Battery Charging
red pulsing
Battery Charged,
enough to use (80%)
blue pulsing
Battery Fully Charged
blue solid
Please dispose of all batteries properly
by finding a recycling resource near you.