A:Answer Hello Jake. Thank you for your question. Each voltage line (24V, 40V, 60V, and 80V) has a set of tools that are only interchangeable within their own voltage platform. Only Greenworks batteries, chargers, and machines of the same voltage are compatible and interchangeable with one another. Therefore 80V batteries will not work with 40V tools and vice versa. We are sorry for any inconveniences this may have caused.