In Turbo mode (maximum power), a single battery can support 60 minutes of runtime, and two batteries can support 120 minutes of runtime. In Eco mode (70% power), a single battery can support 75 minutes of runtime, and two batteries can support 150 minutes of runtime.
It takes 100 minutes to charge a single battery from 0% to 100%. When the battery is at 20%, the machine will prompt that the battery is low. If you start charging from 20% at this time, it will take 80 minutes to charge to 100%.