Chris Nafis
New Member
I've got a ton of RYOBI 18V tools and batteries. When RYOBI came out with their 40V tools, I started making 18V to 40V adapters. Now that I have a couple of 40V batteries, I thought I'd make a 40V to 18V adapter. It looks like something out of Sci-Fi movie, but it works (At least for tools that draw less than 10A). Because of the weight of the 40V batteries and the DC-DC converters, I wouldn't suggest this for tools that you swing around. I'm not sure the tools interface will hold up.