【Wide Compatibility】: This replacement battery is compatible with for Eufy RoboVac 11, RoboVac 11S, RoboVac 11S MAX; for Eufy RoboVac 12, RoboVac 15C, RoboVac 15C MAX, RoboVac 15T; for Eufy RoboVac 30, RoboVac 30C, RoboVac 30 MAX, RoboVac 35C; for Ecovacs Deebot N79, N79S, DN622, Deebot 600, Deebot 601, Deebot 661.【Long Lasting Time】: The real-capacity 5000mAh lithium-ion replacement battery provides an ultra-long running time of 120 to 180 minutes when fully charged. The specific time varies depending on the machine model and age, most can last 2 hours, and the battery replacement can be used a total of 300-500 times.【Multiple Safety Guarantees】: This replacement battery has built-in multiple protection functions to prevent safety accidents caus.