Woot offers DeWalt DCB1104 12V/20V MAX 4 Amp Battery Charger for $24.99 (orig. $79). Free shipping for Prime Members.

Product Description:
Charge your DEWALT 12V MAX*, DEWALT 20V MAX*, and FLEXVOLT® batteries with the DCB1104 charger. This charger has a two-stage LED state of charge indicator to display when it is fully charged. The DCB1104 4A charger is 15% smaller than DCB115 4A charger making it portable.

• State of Charge Indicator: Two-stage LED state of charge indicator
• Compatability: DEWALT 12V MAX*, DEWALT 20V MAX*, and FLEXVOLT batteries
• Portability: DCB1104 4A charger is 15% smaller than DCB115 4A Charger.