DW20V8 Adapter for Dewalt 18V/20V Max Li-ion Battery, V8 Battery Replacement, Work for Dyson V8 Series Animal Absolute Vacuum Cleaners with Clear Dust-Proof Cover Electrician Tools - Newegg.com
Battery Adapter for DeWalt™ 18V Tool to Milwaukee™ M18 Battery – Workshop Outfitters
DEWALT 20 Lithium Battery Adapter in the Power Tool Batteries & Chargers department at Lowes.com