4500mAh Extended Capacity Battery 12V for Neato Botvac Series D75 D80 D85 12Volt | eBay
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