Step-down Converter: Input Voltage: DC 18V-20V; Output Voltage: DC 12V; Output Current: 20A Max; Output Power 240W Max. Please ensure correct polarity connection. Do not use devices exceeding the rated power Compatibility: Perfectly compatible with Dewalt 18V/20V lithium batteries, works with DCB205 DCB206 DCB204 DCB203 DCB200 DCB201 etc. Our battery adapter connector is well-design, snugly fit your battery, easy to install and remove Better Safety: Voltage regulator built-in smart chip, features Over-current, Over-voltage, Over-load, Short-circuit multiple intelligent protection, protect your devices from overpower damage. Battery adapter also have added fuse holder and 30A fuse ensures you can use it safely Easy to Use: We combine the battery adapter and the voltage converter with 2 heat-resistant wires & fuse holder, make it more easy to use, just install the battery to the battery adapter and then connect the voltage converter to your device. (Note: Battery NOT Included) Widely