Vacuum Cleaner

Features and Benefits * 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. * 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 * TECHNICAL SPECIFICATIONS: - Votlage: 14.4V, made of 12 pcs High quality NiCD sub C cells. and packed by 2x6 configuration - Capacity: 2400mAh - Max. Discharging rate : 10 C at 24 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

User Reviews about Tenergy 14.4V 2400mAh NiCD Battery Pack for IRobot Vacuum Cleaner 400 series such as Roomba 4905 --- New!!! A Screwdriver Included!

Bought these to fix a used Roomba. They charged, but then discharged instantly and took another 3 hours to recharge. Probably the Roomba and not the batteries. -- Batteries OK Repair Didn't Work

Easy replacement of dead battery, just remove soldered battery wires and solder on new battery ones. Completed in 10min." -- Cheap and easy replacement

The battery pack came in fast and it works great. It charges up in 2 to 3 hours. My original one needed 8+ hours to charge. -- Works as expected & charges up fast

This thing is a great $$ saver, though you pay for it in the difficulty of removing the lid from the old battery. It can be done with patience, just be aware that it's not a 5 minute thing to install these. -- Cheap alternative