Wednesday, November 16, 2011

How to fix Roomba 500 series battery problem

My Roomba 520 has been out of service for more than six months. The wheels worked fine but the internal brushes didn't turn around anymore. I picked it apart and cleaned the internal gears and engine several times which made it work for a while but I finally gave in and bought a new engine.

Surprise, surprise, it refused to start even after charging it for more than one day. I always got this never ending loop:

It successfully undocked from its docking station but it just reset whenever it tried to start the brushes which led me to believe it was a low battery problem.

Mixing various instructions I found on the internet, I ended up with this procedure which seems to fix the problem:

  1. Connect the Roomba and charge it completely (until the light turns  green)
  2. Disconnect the Roomba from the charger (the light turns off)
  3. Turn on the Roomba by pressing the Start button once (the light turns green)
  4. Press and hold down the Dock and Spot buttons for 15 seconds to reset the Roomba (the Roomba turns off)
  5. Release the Dock and Spot buttons (the Romba plays the 5 tone startup sound)
  6. Go back to step 1
I have repeated the procedure 5 times so far and the run time keeps increasing. 


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  2. Thanks for sharing this content, five months ago I bought Roomba from Amazon. Thanks for halping me, by chance it'll same problem face me i will resolve this problem.
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  3. I've been struggling with my Roomba 500 series battery issue for a while now, and it's been quite frustrating. However, I recently came across some tips on how to fix it, and I'm eager to share them here. From what I've learned, best coursework help for this problem involves checking the battery connections, cleaning the contacts, and resetting the device. By following these steps, I'm hopeful that I'll be able to resolve the battery problem and get my Roomba back to its efficient cleaning performance.

  4. The internal brushes stopped turning, but the wheels continued to function normally. It ran for a while after I disassembled t shirts for men's it and cleaned the engine and internal gears many times, but in the end I gave up and purchased a new engine.