Rated 4.69 out of 5 based on 36 customer ratings
(36 customer reviews)

$29.99

14.4v NICD 2000MAH Replacement Battery for Roomba 400 Series

Availability: In stock

The ML-RMB400 Replacement Battery by Mighty Max is Designed for for iRobot Roomba APS 400 Series, Its an Ni-Cd Rechargeable battery that keeps Roomba running at peak performance, cleaning up your room in a single charge.  ML-RMB400 can be charged or discharged as needed without loss of capacity.
The ML-RMB400 battery is fully compatible with all Roomba FloorVac models: iRobot Roomba 400 Series, Discovery Series, Create Models and Dirt Dog Models.
Battery Specifications:
Voltage: 14.4V
Amperage: 2000mAh
Chemistry: Ni-Cd
Warranty: 1 Year
Volts

14.4v

Amp Hour

2000mAh

Chemistry

NiCd

Quantity

1

Warranty

1 Year

Length

7.00

Width

2.00

Height

2.00

Weight

2.00 Lbs

36 reviews for 14.4v NICD 2000MAH Replacement Battery for Roomba 400 Series

  1. Rated 5 out of 5

    Angie McElhannon

    Works just as it should

  2. Rated 5 out of 5

    Angie McElhannon

    Works just as it should

  3. Rated 5 out of 5

    H.W. KOLLMER

    almost as good as OEM

  4. Rated 5 out of 5

    Web Customer

    Right out of the package, brand new, the Mighty Max Battery powered our Roomba for at least 30 minutes without having to charge it first. We have a 2007 Roomba that’s been inactive for at least five years and now it’s good as new. So far so good.

  5. Rated 5 out of 5

    Customer

    Right out of the package, brand new, the Mighty Max Battery powered our Roomba for at least 30 minutes without having to charge it first. We have a 2007 Roomba that’s been inactive for at least five years and now it’s good as new. So far so good.

  6. Rated 5 out of 5

    Web Customer

    Perfect fit

  7. Rated 5 out of 5

    Customer

    Perfect fit

  8. Rated 1 out of 5

    Dragan j.

    I ordered it in June and it lost its charge In October. Every time I turn my vacuum on it dies on 10 seconds. Very dissatisfied

  9. Rated 5 out of 5

    cinbugg

    Fits perfectly and works. We will have to see if it continues to work well.

  10. Rated 5 out of 5

    W. M. Murphy

    It looks exactly like the OEM battery and the power output is on par with the original. After having for a month, still running daily like a champ.

  11. Rated 5 out of 5

    W. M. Murphy

    It looks exactly like the OEM battery and the power output is on par with the original. After having for a month, still running daily like a champ.

  12. Rated 5 out of 5

    Viktor Vaughn

    The battery was going on my 2007 iRobot Dirt Dog and would run for 20 minutes or less. This replacement battery works perfectly and the iRobot runs like new again.

  13. Rated 5 out of 5

    Marco Carmona

    Exactly what I needed

  14. Rated 5 out of 5

    P Fowler

    Snapped right in, charged quick, good response

  15. Rated 3 out of 5

    Darlene Brzoza

    BATTERY LIFE DIMINISHED WITHIN 3 MONTHS OF USE

  16. Rated 5 out of 5

    Customer

    This has been an excellent replacement battery for our roomba. We have tested it several times to see if it will hold the charge and it has not disappointed so far. Our vacuum is back in business!

  17. Rated 5 out of 5

    Gregory

    My vacuum is back in business!

  18. Rated 5 out of 5

    Leslie C.

    Fit my Discovery and got it back to cleaning. Exactly what I needed!

  19. Rated 5 out of 5

    Customer

    Great! Vacuum works great!

  20. Rated 5 out of 5

    Lassie101

    I hadn’t used my Roomba discovery for about 8. Years and bought the battery and now it works great.

  21. Rated 5 out of 5

    Rommaq

    Awesome! Got it as promised. working like a charm!!

  22. Rated 5 out of 5

    carole wicker

    The replacement battery gave new life to my old I robot.

  23. Rated 5 out of 5

    jATSL

    I have a 2007 IRobot I didn’t think I’d ever be able to use again. My son found this battery replacement & it works like new.I charged the battery overnight & it’s been working perfectly.Never give up on something.Definitely would recommend

  24. Rated 4 out of 5

    Katrina

    Oh to have my machine work again YEA!

  25. Rated 4 out of 5

    Jan

    Works great for my 400 the only issue is it takes over 12 hours to charge.

  26. Rated 4 out of 5

    Customer

    Received when expected and the battery did have a partial charge. I charged fully and my Roomba went to work.

  27. Rated 5 out of 5

    MarcL

    Perfect for my Roomba

  28. Rated 5 out of 5

    DUG

    exactly what was needed

  29. Rated 5 out of 5

    GJ

    Fits perfectly and works just the way it is supposed to.

  30. Rated 5 out of 5

    Maltesefolks

    I am so happy these worked! My roomba is older and I wasn’t sure it would still work. The batteries are perfect and the shipping was great. Thanks so much.

  31. Rated 5 out of 5

    Customer

    Great

  32. Rated 5 out of 5

    James

    Works great.

  33. Rated 4 out of 5

    sierra

    i got this for my old roomba, still charging hopes it worksif not i will send it back

  34. Rated 4 out of 5

    Linda Sue Yoder

    A+++++

  35. Rated 5 out of 5

    Customer

    great

  36. Rated 5 out of 5

    gthummer

    I had a older model Romba that was just shelved after the battery would no longer take a charge. I found coming to has saved me $$$ but also several of the projects would have been just thrown out. Either it was to expensive to try and fix or not finding the right part and having to pay for returns. I will update this to let you know how the battery life is.

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