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Mai Pham
July 28, 2023

Charging your Roomba is an important part of keeping it running efficiently. After awhile you may notice that your Roomba seems to be charging slower or much faster than usual. Then you ask yourself: how long does it take to charge a Roomba? In this article, we will discuss what factors affect the charging time of your Roomba and why you might experience some variations in its performance. We’ll also cover some tips for getting the most out of your device’s battery life.

How Long Does It Take To Charge A Roomba

Roomba requires 2 hours to charge completely when the battery is in good condition. A solid green or white light indicates that it’s fully charged. The battery’s durability is around 90 minutes, which is equivalent to one cleaning cycle and dependent on your Roomba’s runtime.

There are various factors that can affect the charging time and speed of your Roomba vacuum cleaner. If you have a defective battery, it may appear that the Roomba charges quickly, so it’s essential to check if that is the case. Occasionally, your Roomba may not charge at all, or the charging process may take an extended period. An accumulation of dirt or dust on the charging terminals can interfere with the connection between your Roomba and the charging dock, thus affecting the charging process.

How To Fix If Your Roomba Is Charging Slowly

Should I leave Roomba plugged in

There are some tips to try if your Roomba is taking longer than 2 to 3 hours to fully charge. Check the two contact points that are located under the Roomba and on the Home station where Roomba charges. If these contact points are covered in dust, it may prevent Roomba from charging or cause it to take longer to charge.

Clean these contact points with a dry cloth and remove any dust or dirt. Make sure these particular contact points are clean and free of debris, as this will ensure that the charging process is efficient and faster.

Additionally, check if the Home Station power cord is plugged in correctly to the wall outlet. Make sure it’s not loose or blocked by anything that might prevent electricity from flowing. Finally, try unplugging and replugging the power cord to see if that helps speed up the charging process.

If none of these tips are successful, it’s likely that your Roomba battery is faulty or damaged, in which case you’ll need to purchase a new one for optimal performance and faster charging time.

How To Fix If Your Roomba Is Not Charging

If your Roomba is not charging at all, it could be due to a variety of factors.

Firstly, check the two contact points located under the Roomba and on the Home station where it charges – if these are blocked with dirt or dust, it can prevent electricity from flowing properly.

Additionally, make sure the power cord is plugged into an outlet correctly and securely – try unplugging and replugging the cable to see if that helps speed up the process.

Reboot the robot if necessary – press the “Clean” button for 10 seconds to reset it. Finally, if all of these steps fail, try replacing the battery as this could be the reason why your Roomba is not charging at all.

I also wrote a step-by-step guide on how to check why your Roomba is not charging and what to do to fix it here.

How To Fix If Your Roomba Battery Drains Fast

If your Roomba battery is draining faster than usual, there are a few steps you can take to get it back up and running.

  • Try open the cover, remove the battery and re-install it.
  • Reset the charging system by removing the battery from the robot and unplugging the charger from the wall and robot. Remove the battery and disconnect the charger, then press and hold the power button for 30 seconds.
  • If you notice your Roomba stops working after bumping wall, going over air vent, or going on/off rug, the problem might be because the battery is losing its connectivity to the battery prongs. How to fix it? Put a buffer between the battery and the bottom cover to absorb battery movement during operation.
  • Replace the battery if necessary – if the reset process does not work, it’s likely that your battery is worn out and needs to be replaced.

How To Care For Your Roomba Battery

To make sure your Roomba’s battery is working smoothly, there are a few simple tips to follow.

  • Use Roomba indoors at a temperature of 0 to 40 Celsius degrees
  • Keep the dock away from heat sources
  • Keep your Roomba charged on the dock when not in use
  • Use the Roomba often
  • Keep the Roomba robot clean
  • Remove the battery if not use the vacuum for a long time
  • Use iRobot batteries only
  • Fully charge the battery before use

I’ve written a detailed guide on how to care for Roomba battery here.

Charging Your Roomba For The First Time

Charging your Roomba for the first time is an important step in maximizing its performance and battery life. The manufacturer recommends that you charge it for 12 hours straight before using it, as this helps to improve the battery’s health and ensures the battery is sufficiently charged for use.

To get started, plug your Roomba into a wall outlet or power strip, then press the “Clean” button on top of the robot to activate charging mode. Your Roomba will begin blinking orange while charging – when it turns solid green or white, it’s fully charged and ready to go!


A Roomba typically takes 2 hours to charge fully when the battery is in good condition. However, there are several factors that can affect the charging time and speed of your vacuum cleaner. Cleaning the contact points between the Roomba and its dock and ensuring a secure connection with the power cord can help speed up the process. If none of these tips work, try replacing the battery or even rebooting the robot. Finally, to maximize performance and battery life, it’s recommended to charge the Roomba for 12 hours before using it for the first time.

By following these simple tips, you can keep your Roomba running smoothly and enjoy a hassle-free cleaning experience!

About the Author

I am a working mother who more than often prefer to come home and rest rather than doing house chores. I am passionate about simplifying house chores to live and enjoy life more.

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