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: Sparkole 14.4V 2600mAh Replacement Battery for Ecovacs Deebot N79S, N79, DN622.11, DN622 and Eufy Robovac 11, 11S, 11S Max, 30, 30C, 35C, 15C : Home & Kitchen