What is the maximum time that can be added to an activity? Greta July 29, 2021 08:46 Updated The maximum time that can be added to an activity is 23 hours and 59 minutes. Related articles Can I add a counter to an activity? What is the "Intervention time" tab in the Task Analysis dashboard? How to create an activity (intervention report)? 👨🔧🚩 Planning a maintenance plan What's new in your app?