Amazon.com: for iRobot Replacement Parts Roomba 1800LI Lithium Ion Battery Compatible with Roomba 960/895/890/860/695/680/690/675/640/614 4376392 Series 4INR 19/65 14.4V 1800mAh/26Wh (1800mah) : Home & Kitchen
Roomba 690 vs 891: A Helpful Guide - Little Robot Shop