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Knowledgebase: Repairs
Roomba Battery (500 Series) Reset Procedure
Posted by (JG) RobotShop inc. on 12 Dec 2007 08:25 PM
Your Roomba may be experiencing an issue where the APS Battery is deeply discharged and may need to charge longer than the standard 3 hours. If you have fully charged your battery (the Roomba Power light is solid green) and its charging time was short (less than 20 minutes) and its run time was short (less than 20 minutes) you will need to do the following.

1. Reset the Roomba charging system. Do this by holding down the "Spot" and "Dock" button for at least 15 seconds. Once you let go of the buttons your Roomba will sing a song in order to tell you that it has been reset. Note that if your Roomba had scheduled cleanings the schedules will have been reset.

2. Plug the Charger into Roomba (avoid using the Home Base if you have one so as to ensure the Roomba's charging cycle is not interrupted).

3. Charge the battery until the Roomba power light is solid green and keep the Roomba on the charger for an additional 72 hours (3 days). Note: Do not interrupt this charging cycle.

4. Have your Roomba clean without a home base present, to deplete the battery. Have your Roomba clean until it stops and plays the "dead battery" song. Keep track of the runtime and if it has improved, repeat steps 3 and 4 a few times.

If this procedure does not work, it may be worth considering the purchase of a new Roomba APS Battery.
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