RIDGID 18V Lithium-Ion MAX Output (2) 4.0 Ah Batteries and Charger Kit AC9540-AC840040 - The Home Depot
Ridgid AC840094 Gen5X Dual Port 18V Lithium Ion and NiCad Battery Charger with Pass-Through AC Ports and USB Charging (Batteries Not Included, Charger Only) - - Amazon.com