On top of Ryobi tools, when my Dyson cordless vac battery stopped holding a charge, I bought a Ryobi -> Dyson adapter, and now my Dyson vacuum also uses Ryobi batteries. Wife was really impressed with it because you can just swap out a new battery and keep on vacuuming. Also the vacuum actually make use of that battery way more than any of the actual power tools I have.
On top of Ryobi tools, when my Dyson cordless vac battery stopped holding a charge, I bought a Ryobi -> Dyson adapter, and now my Dyson vacuum also uses Ryobi batteries. Wife was really impressed with it because you can just swap out a new battery and keep on vacuuming. Also the vacuum actually make use of that battery way more than any of the actual power tools I have.