Woot offers DEWALT DCB104 20V MAX* Rapid Charger, 4-Port for $179.99 (orig. $309). Free shipping for Prime Members.

Product Description:
Four-port fast charger that charges 12V MAX*, 20V MAX*, and FLEXVOLT 20V/60V MAX* batteries at the same time. This fast charger quickly charges a 4.0Ah 20V MAX* battery in 40 minutes, and a 6.0Ah 20V MAX* battery in 60 minutes. The DEWALT 20V MAX* battery charger is also designed to fit our Tool Connect Tag, and is ToughSystem compatible.

• Simultaneous Charger: All ports of the DEWALT 20V battery charger charge at the same time
• Charges 12V MAX*, 20V MAX*, and FLEXVOLT 20V/60V MAX* DEWALT Batteries
• 8 amps output per port (simultaneously)
• Charges (4) DCB204 battery in 40 mins
• Charges (4) DCB606 battery in 60 mins
• Thru-Hole Wall Mounts
• Cord Wraps
• ToolConnect Tag Ready
• Side Brackets To Mount Onto The ToughSystem Rails