We have been successfully charging Nickel-based power tool batteries for over 5 years and have developed a rapid charging system minimizing heat and resulting in extended battery life. We have also perfected charging of Lead Acid and Lithium batteries allowing our systems to far exceed any existing charging systems. The Result is Unparalleled Performance, Saftey and Durability providing our Professionals with Easy on-site Power Management. Automatically Detects Ni-MH, Ni-Cd and Li-Ion Chemistries and charges all three safely Bad Battery Detection, No more guessing if your present batteries have failed. Checks your battery every time you charge. Brand Specific Base Connector Special adapters (sold separately) to fit all of your major batteries - Single and Dual Brand Adapters. OEM Vendor Compatibility: DeWALT, Milwaukee, Bosch, Hitachi, Makita, B&D, Skil, Panasonic, Craftsman, Ridgid, Porter Cable, Ryobi, FireStorm.