toolboy's Corner: Ryobi 18v to 40v Adapter and Extended Runtime Battery Bank
DIY Power Station Puts Ryobi Batteries To Work | Hackaday
Amazon.com: Ecarke for Power Wheels Adaptor for Ryobi 18V One+ P108 P107 P102 Battery Dock Power Connector RC Toy & Car,e-Bike 12 Gauge Robotics (with Wire Terminals) : Tools & Home Improvement
VANON P102 3.0Ah 18V Replacement for Ryobi 18V Battery Lithium Ion P108 P103 P104 P105 P107 P109 Compatible with Ryobi 18-Volt ONE Plus Power Tool Batteries 2Pack - Amazon.com
RYOBI ONE+ 18V Lithium-Ion 4.0 Ah Battery (2-Pack) and Charger Kit PSK006 - The Home Depot
Motor Kayak Ryobi ONE+ 18V Lithium Battery Hack - YouTube