Cozmo loves his Power Cubes, but what should you do if they start behaving unexpectedly? While you should really just think about new batteries, this article explains what to look for, and things to try if Cozmo or you aren't happy with one or all of his Power Cubes.
Power Cube batteries on average last for 20 hours of game play. Unused, they can last much longer, but once you pull that Pull tab, every Power Cube's battery will eventually loose its charge.
A battery that falls below a minimum voltage level can start to behave unexpectedly. The most typical behavior is that a Power Cube's lights don't flash, but that cube still is detected by Cozmo in Settings > Cube Status.
You can also notice low batteries in multiple situations.
- When Cozmo wakes up and the cube lights always don't flash green.
- Start a game like Quick Tap, and when you present a Power Cube to Cozmo, the cube does not light up white.
- Cozmo has to end games because he looses track of his cubes.
Sometimes if you're having an issue with one Power Cube, but the other cubes 2 are working fine, consider swapping the battery between a working and problematic cube. If the issue follows the battery, it's not an issue with any of the Power Cubes.
When you do move or replace a battery, it's a good idea to use the Refresh Cubes button in the Settings.
If you replace the cube batteries and Cozmo is consistently not detecting his Power Cubes when he wakes up or looses contact with his cubes during games, move the Power Cubes closer to him and perform successive rescans until he is synced with all of his cubes. This should rarely be necessary, so if you're having to rescan often, please consider contacting us.
Some details about Cozmo and his Power Cubes to help in troubleshooting
Cozmo interacts with his Power Cubes on 2 levels:
Cozmo can tell the difference between each cube by its markings. As long as Cozmo is running, he can correctly identify each cube whether or not that cube has a working battery inside.
Cozmo can wireless connect to each one of his Power Cubes. When Cozmo wakes up, each Power Cube must be near by so that he can sync with it. If a cube is too far away or the battery is low, Cozmo may not be able to sync with it. A working battery is required in each Power Cube for Cozmo to wirelessly connect to it.
There's a helpful indicator in the Cozmo app Settings that indicates with which Power Cubes Cozmo has synced. If he communicated with each of his cubes, it will display a green checkmark:
If you click on any Power Cube's icon, its lights will flash a bluish white.
If Cozmo was unable to sync with a particular Power Cube, a red hazard indicator will appear on that cube and that cube will be greyed out:
Move Cozmo's cubes closer to him, and use the Refresh Cubes button to have Cozmo re-sync with all of his cubes:
You can tell if he is communicating with one of his cubes when:
If Cozmo is able to detect any Power Cube, but the LEDs never flash, make sure that it's not a low battery issue and try Refreshing Cozmo's connection with his cubes.
What's the easiest test if the LEDs are working on a Power Cube or if there is a dead battery?
The simplest test is almost identical to how you'd replace a Power Cube battery. You just need to watch for one thing.
- Place the Power Cube on a table with all of the LED lights down
If the LEDs flash red, green, blue, and then turn off, the battery is not completely discharged and the LEDs on that Power Cube are working.
Unfortunately, this does not mean that the battery has enough voltage to correctly power the cube. 1.5V is considered "full", 1.1V is considered "low" (20%), and 1.0V is considered "empty" (0%).