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
1PCS Replacement 14.4V 3000mAh NI-Mh Battery for iRobot Roomba 500 600 700 800 Series