Berucci&trade; Replacement Battery for Irobot Braava 320 321 & Mint 4200 4205 - 7.2V - 1800MAH Battery Volt: 7.2V Battery Capacity: 1800mAh Compatible with iRobot Braava 320, iRobot Braava 321 Compatible with Mint 4200, Mint 4205 Compatible with Dirt Devil EVO M678 Berucci is a trademarks of A & S Global, Inc