Is there a way I can power my 20v battery Dewalt tools with a corded power supply?

If you are thinking some wired power supply that is able to interface with the standard battery connector on DEWALT cordless tools, and provide the necessary power in lieu of a battery. Mellif gives you a solution.

• It turns cordless tools into corded use for steady-state and continuous use. You will never need to worry about running out of battery life again.
• 【Corded Power Adapter】It is an alternative power source accessory for Dewalt 20V battery, that can provide unlimited runtime when AC power is available.
• 【Easy Operation】Equipped with a safe extension cord that will not be affected by voltage drop. Built-in led work light provides convenience for dim environments. Simply plug the adapter into the wall or generator and then slide the tool on to the adapter to get full corded power.
• 【Safe to Use】This 110V input power source produces 1000W continuous working power, and 2000W instantaneous maximum power. Built in overheating protection function cuts off output in case of overheat.