QCKRTAU Vacuum Cleaner Accessories,Rechargeable Li-ion Battery Robot Vacuum Cleaner，Compatible For XiaoMi，Compatible For Viomi ，S9 ， Battery Pack Big Capacity

Battery capacity: The battery capacity determines the usage time of the robotic vacuum cleaner. Generally speaking, the larger the capacity, the longer the usage time. Charging time: The charging time for different models of robotic vacuum cleaners may vary, generally around 3-6 hours. Usage time: The time that the robotic vacuum cleaner can work continuously after being fully charged once. Lifespan: The lifespan of a battery depends on factors such as frequency of use, number of charge and discharge cycles, etc. Generally speaking, the lifespan of a battery is around 1-3 years. Compatible for XiaoMi，Compatible for Viomi ，S9 ，Compatible for Lydsto， R1 Battery Pack Big Capacity