Roomba Charging Error 1

Roomba Charging Error 1

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Just think about how much time you’d save by not having to sweep your floors every day if you had a robotic vacuum cleaner. 

Now imagine that your trusted robot cleaner unexpectedly refuses to charge; how would you react?

Quite annoying, No?

Are you annoyed with Roomba charging error 1 Keep reading to learn its causes and solutions right away.

Related: Roomba Stops Charging After A Few Seconds

“One thing I love about Roomba is that it displays proper error codes. That allows us to diagnose and resolve our errors accordingly. For example, if you get Roomba charging error 1, it means that Roomba isn’t sensing the battery that you installed.”

What Are the Causes of Roomba Charging Error 1?

Roomba charging error 1 indicates that your Roomba is not sensing the battery that you installed in your roomba. If your robot doesn’t sense the battery, it will not get charged. 

The error indication can vary depending on whatever model you have.

Like as;

  • On the Roomba 900 series, the error message will say, “Charging error one (1). Check that Roomba’s battery is installed. Open the iRobot App for help.”
  • On the Wi-Fi-connected Roomba 600 and 800 series, the error message will say, “Charging error one (1). Please open the iRobot HOME App for help.”
  • On the Roomba 500, 600, 700, and 800 series, the error message will simply say, “Charging error one (1).”
  • Some models may display “ERR1” as the error message.

Ensure you are utilizing a genuine iRobot Lithium-Ion battery. There is a possibility of unexpected charging errors with batteries bought from an aftermarket source.

How To Fix Roomba Charging Error 1?

Roomba Charging Error 1

If you are worried about can you fix Roomba charging error 1 on your own and want to give it a shot at home, Here are a few of the troubleshooting steps to help you;

Step 1: Check if the Battery is Genuine

One of the reasons why the Roomba is unable to recognize the battery is because the battery is not original or from some unreliable store.

Always use genuine iRobot or certified genuine iRobot parts with your Roomba, including batteries.

Because they are not manufactured to iRobot’s specifications, lesser batteries can even pose a fire hazard. Purchasing a less expensive battery can negatively impact the functionality of the Roomba.

Get replacement batteries and spare parts exclusively from the iRobot website or one of their authorized part manufacturers. 

You can verify the authenticity of the spare parts you got by looking for the logo in the picture above.

Step 2: Clean Roomba’s Charger Contact Points

Roomba Charging Error 1

The charger sensors may be cleaned with a cleanser, which iRobot highly suggests. To clean the charging sensor’s contact points, 

  1. Unplug the charging wire and give it a good soaking before squeezing it dry.
  2. Remove all moisture from the damp areas and reconnect the charger to your Roomba.

Step 3: Make Sure The Battery Is Properly Installed

If your Roomba’s battery is not properly aligned, it will not be detected; checking its position is a viable option.

  1. Flip the Roomba over and take out the screws to access the battery. 
  2. There should be two to four screws, depending on the version of your Roomba.
  3. Take off the rear cover and ensure the battery is properly positioned inside the compartment with the label facing you.
  4. You can simply remove the battery and check if anything, such as the yellow battery draw tab, obstructs the battery contacts.
  5. After completing the inspection, reinstall the battery carefully and ensure it is properly aligned. 
  6. If you are confident that the battery is positioned correctly, reassemble the Roomba.

Step 4: Make Sure The Charging Cable Is Working

Roomba Charging Error 1

The power hub or base of your Roomba is linked to an electrical outlet by means of a charging wire. 

Most of the electrical appliances in our house fail to operate for no other reason than a broken cable, which may have been damaged or burned due to a short circuit. 

Check that the charging cable is working fine and there’s no connection problem with Roomba. If the problem is not with the connection cable, follow other ways.

Step 5: Insert a Shim to Align the Battery

Even if the battery is placed correctly, it may not fully contact the terminals in the battery case. Therefore, the Roomba will not recognize the battery, and you will get the Charging Error 1 message.

When you place the battery in its compartment, use a piece of folded paper or a thin piece of cardboard to cover up the empty areas so the battery will sit flush with the container.

Anything metallic should not be used as a shim or in any other electrically conductive way since it may harm the power source or the Roomba.

Step 6: Clean The Roomba Battery Terminals

Roomba may fail to detect the battery if the battery terminals have accumulated grime, grit, or corrosion. Cleaning the battery terminals can effectively resolve Roomba charging error 1.

To sanitize the battery terminals on your Roomba, follow these steps:

  1. Remove the two to four fasteners on your Roomba’s underside, then remove the cover.
  2. Take off the entire yellow battery tag.
  3. Inspect and sanitize the battery terminals with rubbing alcohol and a gentle cloth. Using a Q-tip, thoroughly clean the battery terminals.
  4. Apply the same procedure to the robot’s internal contacts.
  5. Reconnect the Roomba and tighten the cover.
  6. Clean the Roomba’s charging terminals with rubbing alcohol once more.
  7. After completing the steps, charge your Roomba for at least 16 hours.
  8. Confirm whether or not the error still exists.
  9. If this method fails, do not use water to sanitize the battery or charging contacts, as it may cause further damage.

Step 7: Replace the battery with the new one

Roomba Charging Error 1

After trying all the above methods, the final thing you can do to remove the roomba charging error 1 issue is to replace the battery with a new one.

Yes, there is a possibility that your roomba lifetime expires or your roomba becomes damaged.

Just replace your battery with a new one and save your valuable time.

Troubleshooting Roomba Charging Errors: Error 11, Error 5 and Error 8.

Step 8: Contact Support

If you have attempted all the above solutions and cannot resolve the issue, the problem likely lies within the device itself. You must notify Roomba’s official support

They will undoubtedly point you in the right direction and solve your problem. Hopefully, a replacement battery will be provided.


You can resolve Roomba charging error 1 by following some methods. You must check the charging points on the battery are clean. 

You must install and fit the battery in its right position. You must make sure that the charging cable is right.

If you cannot find the solution, you must restore the battery’s default settings. If the Clean button doesn’t work on the Roomba, you must power cycle the Roomba and try the button again.


How do I reset my Roomba battery?

You might get a lot of information on Google search about how to reset a Roomba battery. But according to my knowledge, you cannot reset a Roomba battery, and there is no type of physical button or setting to reset the battery. 

What is charging error 2 on Roomba?

Charging error 2 indicates that a fault has been detected and your Roomba battery is not charging.

Thanks For Visiting!

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