?Upgraded 4.0Ah Capacity?: The Real-Capacity 4000Mah Lithium-Ion Deebot 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 Life Span Can Be Up To 600+ Cycles(1Cycle: Full Charge?Full Discharge). | | ?Compatibility?: Compatible With Eufy Robovac 30C Eufy Robovac 11 11S 11S Max Robovac 30 30C Robovac 12 Robovac 15T 15C, 15C Max, Robovac 35C Conga Excellence 990 Deebot N79S N79. ??To Aviod Wasting Time, You'D Better Remove Your Original Battery From Your Robot Vacuum And Make Sure Yours Is 3-Prong Plug As Ours | | ?Safety And Stability?Built-In Intelligent Cc Cv Charging Circuit Provide Comprehensive Protection: Overcharges, Over-Discharge, Over-Current And Overvoltage Protection To Ensure Safety And Extend Battery Life. Acquisition Of Ce Fcc Rohs Certificates. | | ?600+ Recharge Cycles? 4.0Ah(No Fake High Label Capacity)Ecovcas Ba.