Synergy Digital Vacuum Cleaner Battery, Works with Eufy RoboVac 11 Vacuum Cleaner, (Li-ion, 14.8V, 2600mAh) Ultra High Capacity, Compatible with Eufy 0 Battery - Walmart.com
Amazon.com: Powerextra 14.4v 2800mAh Replacement Battery Compatible with Eufy RoboVac 11 11S 11S MAX 30 15C 15T 12 35C Ecovacs Deebot N79S DN622 : Home & Kitchen