RYOBI 40V to 18V battery adapter

[Chris Nafis]

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.

 

[sam_sam_sam]

Why did you do it this way when you could have taken the 40 volt battery apart and put 5s4p in the 40 volt battery case

I made a 5 volt battery power supply out of a 40 volt battery pack case and it works very good you just gave this idea for when I buy another 40 volt battery pack case and make a 18 volt super battery pack for this project idea thanks for sharing your idea gave me ideas

This is one with the battery power supply for phone and tablet that I about six months ago I also did one with a Ryobi 40 volt case as well