Has the performance of your Roomba vacuum dipped? Have you been using your robot vacuum for years now, but it no longer seems to be doing the job? If your vacuum is acting up and is not performing like it used to, then you’re probably wondering your Roomba needs a new battery. 


But this is where some of us have a follow-up question — can you replace a Roomba battery? The answer to that is yes, you can replace their batteries, but first, you need to determine whether your Roomba has gone past its prime or if it merely needs a battery reset. 


Some of Roomba’s performance issues come from battery problems, but it isn’t always easy to tell right off the bat if you need a new battery. However, there is no reason to worry, because this guide will show you all the tell-tale signs that tell you when you need to replace your Roomba’s battery and how to tackle it. 


Here are some signs that your Roomba needs a new battery: 

  • The battery doesn’t hold a charge
  • The battery has a short run time
  • Power light refuses to turn on
  • Low performance even if you cleaned the robot
  • Performance does not increase after resetting
  • You have a significantly old Roomba model


So if your Roomba isn’t making the trip back to its dock every night, don’t worry, it’s not going somewhere else, it’s just tired, and it needs to be re-energized with a new battery. 


Here are some signs of a worn-out Roomba battery: 

  • Roomba repeatedly fails to return to the charging dock
  • Roomba’s found dead across the house
  • Roomba forgets its schedule
  • Roomba’s not moving as usual


But even with these problems, it’s a good thing that the engineers at iRobot thought of a battery replacement method that requires only a screwdriver and about 5 minutes of your time. This guide works for any product of the Roomba series 500, 600, 700, 800, or 900. 


To begin, you’ll need: 

  • Screwdriver, Phillips
  • Roomba
  • Replacement Roomba battery (500, 600, 700, 800, 900 series)


First, open your Roomba: Place the Roomba on its back and thoroughly loosen the four bottom screws. Don’t remove them altogether, as they are permanently attached to the cover. Then, remove one spinning brush and pop the brush off. Lastly, remove the bottom cover. 


Second, remove the old battery: There are two tabs on the old battery, lift on them to pull the battery out of its housing. 


Third, install the new battery: The new battery should be identical to the old one. Fit it into place. 

Forth, reassemble everything: As usual, everything needs to be put back into place. While you’re at it, now is a good time to replace the spinning brush. Some replacement battery kits may come with an extra brush (be sure to look for one that has a brush to complete a full placement of your Roomba’s accessories so that everything looks brand new again.) If yours didn’t come with a brush, you could grab one on Amazon for a few bucks. 


Now you are all done, so charge your Roomba overnight to give him a good night’s sleep and enjoy using it as if it was brand new in the morning.