5000mAh 14.4V Battery Replacement Fit for iRobot Roomba R3 500

The original battery from my Roomba 650 lasted over ten years, being used almost daily. It has aged with me and I hardly noticed that it was slowing down and sometimes having difficulty finding the dock. Finally, it would only run for a minute and then completely stop, requesting to be charged. I performed all the diagnostic tests before determining that the battery was truly dead. I wasn't confident that I could find a good replacement battery and contemplated buying a new roomba. Not wanting to abandon my long-time, reliable and industrious companion, i took a chance and ordered this inexpensive battery replacement. Four screws opened the back cover, enabling me to easily remove the old battery and install the new one. Still wary, I charged it overnight. The next morning, I sent it on its trial run. It was an amazing sight to see. It was back to its original speed , zipping around the house. It lasted a long time. It had no trouble finding the dock. It is now helping me with a thorough clean. I've been moving all furniture, so it can slip behind and do its usual, wonderful job. It's working like it is brand new. I am thrilled. As you can see, it is battle-scarred from overwork and mistreatment, like me. I hope we have many more years together. I will report back in six months to let you know how we are both doing.

My old battery lasted about 10 minutes and I had tried to buy a new one a couple of months ago from a different brand. I had returned it because there was not much improvement with only 15 minutes battery life. I gave it another try and bought this FirstPower for my Roomba 551 . I charged the battery overnight and put the Roomba to work but again, I was disappointed with only 20 minutes life. I then tried to reset Roomba as I had seen on the internet by pressing at the same time the spot and the dock button. I had read that after doing this, it needed to recharge for 72 hours, directly with the charger (not on the base). I left it for a whole week and then, tried it again. It was amazing, I thought it would never stop :) It lasted 1h45 minutes which is more than my original battery ever lasted. Hopefully, it will continue to work as well with use.

These batteries worked well but after 11 months they are down to 20 minutes of vacuum time. 2 batteries in 2 different Rumbas. Not good enough Note: the company read my review and contacted me. They sent me out 2 new batteries to replace the ones I bought. Changing to 5 stars. This is a quality company that actually cares about their customers. Great job!!

Good and cost effective va buying a new iRobot. Only lasts about a year, works twice a week and one room only.

Battery was perfect for our Rumba. Install is simple and hope to be good for another 4 years

It’s fit and works good on my Roomba

Worked perfectly in my 12 year old Roomba! It seems to be cleaning better and faster than before. Very easy replacement and a good price as well.

6 months later and the battery lasts through about 45 minute cleaning, maximum, before needing to recharge. Nothing compared to the battery it was manufactured with unfortunately. Thought I got away with a cheap alternative but sadly disappointed. **update July 13, 2026, they reached out ti me and are sending me a replacement battery. They offered a refund as well. I changed my review to 4**** and if the replacement battery lasts, I'll bring it on up to 5***** on update.

No duró ni un mes y dejó de cargar. El uso fue de un par de veces a la semana en un solo cuarto. Luego de la segunda carga se murió.

Works as good as the original

La tuve regresar nunca cargo la pila