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
Amazon.com: ABL-B 4INR19/65-2 Replacement Sweeper Rechargeable Li-ion Battery for iRobot Roomba S9 9150 S9+ S9550 9550 + S9 Plus S955020 S955880 Robot Vacuum Series 14.4V 3300mAh 48Wh : Home & Kitchen