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Battery Shell BMS PCB Charge Protection Board for Irobot for Roomba Sery Sweeper - Walmart.com
Amazon.com: NASTIMA 14.8V 5000mAh Lithium ion Replacement Battery Compatible with iRobot Roomba 960/895/890/860/695/680/690/675/640/614, Replace The Original 1800mAh Lithium ion Battery : Home & Kitchen
Lithium Battery Charging Protection Board PCB Circuit Board For Irobot Roomba Robotic 14.4V 500 600 700 Series - AliExpress