Step-Down Converter: Input Voltage: Dc 18V-20V; Output Voltage: Dc 12V; Output Current: 20A Max; Output Power 240W Max. Battery Adapter Built-In Over Low Voltage Protection, Auto Shut Off If The Battery Voltage Is Lower Than 15V, Protect Your Battery And 12V Device | | 3 Charging Ports: The Adapter With A Battery Can Be Used Separately As A Portable Power Bank. 2 Usb-A Ports 1 Type-C Charging Port Supports Fast Charging For Cell Phones, Tablets, And Other Electronic Devices, And Can Charge 3 Devices At Once. When Charging With A Single Port, Usb-A Output: Qc 18W Max, Type-C Output? Pd 30W Max | | Better Safety: Battery Adapter With Over-Load, No-Load Power-Off, Over-Current, And Low-Voltage Protection. Voltage Regulator Built-In Smart Chip, Features Over-Current, Over-Voltage, Under-Voltage, Over-Load, Low-Load, Short-Circuit, Over-Heat Multiple Intelligent Protection, Protect Your Devices From Overpowering Damage | | Compatibility: Perfectly Compatible With Dewalt 18V/20V Lit.