This intelligent DeWalt DCB118 XR Flexvolt Fast Charger is designed to charge both 18V and 54V FlexVolt XR Li-Ion batteries. It automatically adjusts its output current based on the battery's Ah to optimize charging speed. The charger features an LED indicator to display the battery's charge status and can charge a 2.0Ah battery in approximately 30 minutes, and a 6.0Ah battery in about 60 minutes. It operates efficiently between 4°C and 40°C and is wall-mountable with a fan for cooling. The charger supports multiple voltage outputs, including 2, 3 & 4Ah at 4A, 5Ah at 5A, 6Ah at 6A, and 9Ah & 12Ah at 8A. It also includes a diagnostic LED indicator for charge status communication with a red/yellow blink pattern for errors. Its compact size and wall-mountable design make for easy storage.