Amazon.com: Upgraded DCB104 Replacement for Dewalt Battery Charger, Simultaneous Charging for 12V and 20V Max Battery with 2 USB Ports, Compatible with DCB124 DCB126 DCB200 DCB205 DCB206 DCB606 DCB609 : Tools &
DEWALT 12-Volt 5 Amp-Hour; Lithium Power Tool Battery in the Power Tool Batteries & Chargers department at Lowes.com
Dewalt DCB115 10.8V-18V MAX Lithium-Ion Multi-Voltage Battery Charger - Walmart.com
DEWALT 12 Volt/20 Volt MAX Lithium-Ion USB Power Source - Thomas Do-it Center
DEWALT 12V MAX 20V MAX Lithium-Ion Battery Charger
I modified a DeWalt battery charger to have the battery act as a power supply for a 12V car charger so I can charge my phone and radio on my work cart.
DEWALT 20V MAX Compact Lithium-Ion 3.0Ah Battery Pack with 12V to 20V MAX Charger DCB230C - The Home Depot