Specifications: Battery capacity: 4000 mAh. Compatible with Ecovacs Deebot N79, Deebot N79S, Deebot DN622, Deebot DN621, Eufy RoboVac 11, RoboVac 11S, RoboVac 11S MAX, RoboVac 15T, RoboVac 30, RoboVac 30C Max, RoboVac 15C, RoboVac 15C MAX, RoboVac 12, RoboVac.
