7.2v Ni-Mh 2600mAh Battery for iRobot Braava 320 321 Mint 4200 4205 GPHC152M07 Floor Cleaner Robot 4408927 - AliExpress
CJP-Geek AC / DC Adapter For iRobot Braava 320 Automatic Floor Cleaner Mopping Cleaning Robot Power Supply Cord Cable PS Wall Home Battery Charger Mains PSU - Walmart.com
Amazon.com: HQRP 2200mAh Battery Works with iRobot Mint 4200, Mint 4205, Braava 320, Braava 321, 4408927 Automatic GPHC152M07 Ultra High Capacity [Robotic Vacuum Cleaner] : Home & Kitchen