Tenergy 14.4V 3800mAh NiMH Battery Pack for IRobot Vacuum Cleaner 400 series such as Roomba 4905 –New!! A Screwdriver included
Product Description
Features and Benefits
* NIMH High Power 14.4V 3800mAh rechargeable battery
* 70 oC thermistor installed in the battery pack. Power will be cutt off if battery temperature beyond 70oC during charging to prevent from over charge.
* 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
* TECHNICAL SPECIFICATIONS:
- Votlage: 14.4V, made of 12 pcs High quality NiMH sub C cells. and packed by 2×6 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
Josephine said:
2.0 out of 5 stars
No staying power
Originally, I was very happy with the replacement cells for the Roomba APS battery, but after about 6 months of cleaning 3x per week runtime has decreased dramatically.
Ian said:
1.0 out of 5 stars
Didn’t last long
These batteries got used 5 times and then wouldn’t hold a charge anymore. Now that iRobot has lowered their battery packs I’ll be buying them from iRobot.
Anonymous said:
5.0 out of 5 stars
Great deal, not real difficult to install
I purchased 3 of these for my 3 robots. The saving alone was enough to take on the daunting task of opening up the cases. It was much easier once I figured out the trick.
Anonymous said:
2.0 out of 5 stars
Battery has short lifetime
This battery is difficult to install as noted in other reviews. But once it is installed it restores the run time of the Roomba to what it was initially.