Ozobot motor is fueled by a tiny battery.

If Ozobot blinks red, then the battery needs to be charged as soon as possible. 
Plug the mini USB charging cable into a computer or multi-port charger and plug Ozobot into the other end.

Ozobot blinks green when it is partially charged,
and shows a solid green light when fully charged.

When Ozobot is stored for long periods of time,
leave the battery at medium charge,
since high or low charge can hurt the battery.

Discover more about Ozobot!