Amazon.com: TOPCHANCES 12 3500mAh Replacement Ni-Mh Battery Pack for Neato Botvac Series and Botvac D Series Neato Battery Neato Botvac Battery 70e, 75, 80, 85, D75, D80, Botvac D85 Neato Robot Vacuum
CyberTech High Capacity 7200 mAh Lithium Ion Battery Replacement, Compatible with Neato Botvac and Botvac D Series Robots, comes with One Free Side Brush and One Free HEPA Performance Filter - Walmart.com