Masione 7.2v 2200mAh High Capacity Mint 4200 4205 Replacement Battery GPHC152M07 for iRobot Braava 320 321 Floor Cleaner Robot 4408927 7.2Volt 2200mAh High Capacity Ni-MH Rechargeable Battery. 100% Compatible with Mint 4200 Robotic Vacuum Cleaner Replacement for iRobot Battery Model/Part Numbers: 4408927, GPRHC152M07,Works just like your original battery and it can be charged by the original charger Perfect Compatible with the following iRobot Floor Cleaning/Mopping Robot Models: Braava 320, Braava 321, Mint 4200, Mint 4205. Battery will last up to 2-3 hours dry mopping and up to two hours damp mopping and fully charges in approx. 10-12 hours. 30 Days Money Back, One Year Warranty,24 Hours Customer Supports, Buy with Confidence!