DIY Combo Tenergy 14.4V 3800mAh NiMH Battery Pack for IRobot Vacuum Cleaner - Roomba 4905-1 with Tri-Wing Trigram Screwdriver

Features and Benefits

• NIMH High Power 14.4V 3800mAh rechargeable battery
• Compatible with all Roomba® FloorVac® models.
• Longer running time - this high power, high capacity NIMH  and has 10-15% more running time than OEM battery pack.
• 70 ^oC thermistor installed in the battery pack. Power will be cut off if battery temperature beyond 70^oC during charging to prevent from over charge.
• Provides up to 120 minutes run-time.
• Can be recharged up to 1000 cycles.
• 6" length wires is pre-installed for easy installation.
• The battery is designed for  exactly replacing inside battery pack for IRobot® Vacuum cleaner. e.g Roomba® APS 4905 battery.
  - To replace inside battery, you need to take off 4 screws on the case, then put new battery with solid connection. 
  - Please make sure polarity of battery pack.  Red wire is always connect to positive

Compatible with the following models:

• Discovery Series
• Create Models
• Dirt Dog® Model
• iRobot® Roomba® 400 Series:
  

TECHNICAL SPECIFICATIONS:
- Votlage:  14.4V,  made of  12 pcs High quality NiMH sub C cells. and packed by 2x6 configuration
- Capacity: 3800mAh
- Max. Discharging rate :  10 C  at 33 A
- Dimension:   136 mm L x 45 mm W x  45 mm H.
- Weight:    38.5 Oz.

Battery Installation Instruction:
Step 1: Loose up all srews on the top cover of the Roomba® Advanced Power System.
            Tool: You need a triangle screw driver to do so.
Step 2: Open and remove the top cover from the power system, which may be glued. 
            Tool: You may need a flat screw driver to open it carfuelly
Step 3: Remove the old battery inside. Three are wires with metal contact connected inside. You can remove the wires  by pulling up the contat or cut wires off.
            Take a note of the wire connections
Step 4: Put new battery into the battery case and solder three wire back to metal contacts. Follow the note taken in Step 3 or the following details for re-wire:
            - Red wire :  battery positive - The red wire must go to the terminal farthest away from the battery 
            - Black wire: battery negative - metal contact near edge
            - White wire: temp sensore  - metal contact on other side
Step 5: Put back the cover
Step 6: Screws on the cover

*Tenergy product is a generic replacement, not the original OEM battery.
*iRobot®, Scooba®, Roomba® are trademarks of iRobot Corporation.
*Tenergy is not associated with iRobot® Corporation.
*Tenergy product is not subject to any warranty by iRobot.

All Other iRobot Batteries and Cleaners

Still unsure if you are purchasing the correct battery?
See our Roomba Battery Comparison Page to find the correct battery for your unit: CLICK HERE