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
RIDGID 18V Lithium-Ion MAX Output 4.0 Ah Battery and Charger Starter Kit AC9540 - The Home Depot
Amazon.com: 18V R86092 Fast Charger Lithium Battery Charger for RIDGID Tools 18V Battery R840083, R840085, R840086, R840087, AC840085, AC840086, AC840087P AC840089 etc. : Tools & Home Improvement