??Compatibility?Suitable For Dewalt 12V 20V Max Batteries And Compatible With Dewalt Flexvolt 20V/60V Batteries. The Dcb120, Dcb200 And Dcb600 Series Batteries Are All Perfectly Compatible. | | ? ?Specifications?4 Charging Ports (Can Charge At The Same Time). Input: 100-240V; Output (Each Port): 20V?3A. It Only Takes About 1 Hour To Fully Charge 4 Dcb204 Batteries, Greatly Improving Work Efficiency. (Please Note That Some Batteries Have Self-Protection Function. For Safety Reasons, They Will Be Charged More Slowly After The Battery Is Completely Discharge Or After Transportation Bumps) | | ??Safety Protection?Built-In Intelligent Protection System Which Can Avoid Overcharge, Overvoltage, Overheat, Overcurrent, Overdischarge And Short Circuit, And Designed With Led Indicator, Which You Can Observe The Working Status Of The Charger At Any Time. These Designs Can Effectively Extendthe Life Of Batteries And Chargers And Effectively Avoid Safety Risks Caused By Inappropriate Operation Or.