Unfortunately, it's not perfect, as not all tools and batteries are interchangeable. For example, if you have a 40-volt Ryobi ...

The Ryobi Expand-It system has a cordless power unit with a variety of attachments that you can swap in and out. Here's how ...

Notable features of the kit include its 18-volt One+ compatible battery, a variable speed trigger to regulate its power for delicate and tougher jobs, and its lightweight build. The Ryobi 40-Volt ...