# 🔋 What is the battery life of the Roomba S9?

*Published: 2024-08-19 | Updated: 2024-08-19 | Source: https://shopsavvy.com/answers/what-is-the-battery-life-of-the-roomba-s9*

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## Product: iRobot Roomba S9 (9150)
**Brand:** iRobot

The Roomba S9 has a high-capacity lithium-ion battery and, according to the manufacturer, it can run for up to 120 minutes on a single charge. That's usually enough to tackle an average-sized home. 

Once the battery is low, the Roomba S9 will return to its charging base on its own, and it takes about two to three hours to fully recharge before it's ready to go again. 

From our research, most folks seem happy with the battery life, saying it's sufficient for cleaning multiple rooms or even a whole floor in one go. However, some have noticed the run-time can vary, especially if the vacuum has to deal with lots of clutter or thick carpets that drain the battery faster. 

A handy feature is 'Recharge and Resume,' which lets the robot go back to its base to recharge and then pick up cleaning right where it left off. This is super useful for bigger homes or really deep cleaning sessions.

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*Where this comes from: This answer is based on ShopSavvy's product database, real-time pricing from thousands of retailers, and analysis of user reviews to give you a well-rounded picture.*