Maybe 2nd best $20 new accessory?? Turns any 18v ryobi battery into a usb power bank. This guys isn't getting any love but I think it's pretty neat too. : r/ryobi
P743 USB Battery Adapter Camping Light,Hipoke Portable Power Source Adaptor 420LM LED Work Light Dual USB Phone Charger with Hook Compatible with Ryobi 18V One+ Li-ion Battery: Amazon.co.uk: DIY & Tools
Ryobi One+ 18V USB Power Adapter - YouTube
Cordless USB Charger | Portable USB Charger | RYOBI 18V ONE+™ R18USB-0
LabTEC P117 Dual Port Battery Charger Replacement for Ryobi 12V-18V One Plus Series, Li-Ion NI-Cd NI-MH Battery Charger for Ryobi BPL-1815 P102 P103 P104 P105 P106 P107 P108 P109 P122: Amazon.co.uk: DIY
For Ryobi 18V Li-Ion Battery Adapter DIY Dual USB LED-Switch Control 12V DC Port | eBay
toolboy's Corner: Charging Your Phone with a Ryobi Battery
18V ONE+ Portable Power Source - RYOBI Tools
18V ONE+ Portable Power Source - RYOBI Tools
Ryobi One+ 18V USB Power Adapter - Skin Only - Bunnings Australia
Cordless USB Charger | Portable USB Charger | RYOBI 18V ONE+™ R18USB-0
For Ryobi 18V Li-Ion Battery Adapter DIY Dual USB LED-Switch Control 12V DC Port | eBay
18V ONE+ 150-WATT BATTERY POWER SOURCE AND... - RYOBI Tools
Cordless USB Charger | Portable USB Charger | RYOBI 18V ONE+™ R18USB-0