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NiMH Battery Pack: 14.4V 3.3Ah for iRobot Roomba 4905 400 series Vacuum Cleaner + Smart Charger

Your Price: $49.95
In Stock

Product ID # 1264
Part Number:

Lead Time: 5 Business Days!

Quantity Discounts

5 to 20$48.45
21 to 50$47.45
51 to 100$46.45
101 or more$44.96


  • 1 pcs NiMH Battery Pack: 14.4V 3.3Ah for iRobot Roomba 4905 400 series Vacuum Cleaner(RB-ROOMBA400)
    • Battery compatible with all Roomba FloorVac models## 400, 405, 410, 415, 416, 418, 4000, 4100, 4105, 4110, 4130, 4150, 4170, 4188, 4210, 4220, 4225, 4230, 4232, 4260, 4296
    • Provides up to 100 minutes of run time
    • 50 percent greater useful life than original Roomba batteries
    • Easy to charge and connect
    • This NiMH Box Battery is compatible with all Roomba FloorVac models and has 11% more running time than the OEM battery pack. Compatible with the following models:
      • iRobot Roomba 400 Series
      • Discovery Series
      • Create Models
      • Dirt Dog Model
    • Battery Box dimension (LxWxH): 180mm x52mm(2.0") x 53mm(2.1")
    • Weight: 38.5Oz (1091 grams)
    • Tab Charging terminal. ( Right most = Positive)

 14.4V 3300 NiMH pack Specification

    • Made of  12 pcs High quality NiMH sub C cells and packed in 2x6 configuration.
    • Capacity: 3300mAh
    • Max. Discharging rate :  4.2A limited by polyswitch
    • 70 oC thermistor installed in the battery pack. Power will be cut off if battery temperature is above 70oC during charging to prevent from over charge.
    • Can be recharged up to 1000 cycles.
    • Dimension: 136 mm L x 45 mm W x  45 mm H. (5.35" L x 1.77" W x 1.77"H)
    • Weight: 714g ( 25.2 Oz.) 

 How to connect included connector adaptor to RB-ROOMBA400 battery for Standard Male Tamiya charging terminal (Red wire = positive, Black wire = negative)

 How to charge RB-ROOMBA400 battery (Standard Male Tamiya charging terminal) by included  CH-UN180 charger & included  connector adaptor


Original Roomba Battery case


Loose all screws on the top. You need a triangle screw driver to do so. You can make a triangle screw driver by grinding machine, or add the option for the screw driver


Open the cover which may glued.  You may need a flat screw driver to open it carefully

Note: Please pay special attention to where the terminals need to go. The picture above does not indicate the correct locations for the metal connectors. (There is indicator on the bottom.) The Red wire goes to the outside terminal and Black wire goes to the inside terminal


  • Take out the old battery by pulling up the metal contacts of the three wires. Cut the wires about 2 inches from the metal contact.
  • Put new battery into the case and solder the three wires back to metal contacts. Please make sure polarity is corrected . 
  • Double check battery polarity with a multi-meter before connecting battery
    • Red wire :  battery positive
    • Black wire: battery negative
    • White wire: temp sensor
  • Then reverse above procedure to close battery cover.



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Product Reviews

(2 Ratings, 2 Reviews) Average Rating:
everything worked smooth
pepsamar (Barcelona, 08008 Spain) 6/27/2012 4:33 PM
My experience has been fantastic, very fast response and adaptation to my personal needs. The item was sent at a lighting speed. As a critic instructions for the battery charger are not clear but everything worked smooth.
I finally got Roomba running again,I love it!
silviu2003 (Toronto, ON ) 6/6/2012 1:51 PM
Was quite impressed with the quality of battery and charger. I finally got Roomba running again. Low charging time and long running time: I love it! But shipping sucked! Please! Please! Please add a RED WARNING for U.P.S. Canada! Worst possible shipping choice: they wanted $44 extra on top of the $20 already paid and held my package for ransom. I escalated and paid only duty & tax but the driver refused to hand me the package and was rude. There's no communication between UPS departments! Spent hours on phone, 8 calls!
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