2-in-1 Dewalt/Milwaukee to Bosch Battery Adapter - Powuse
Dewalt to Bosch PBA Battery Adapter - Powuse
Amazon.com: AuthFrank BS18DL Battery Adapter converts for Bosch 18V Lithium Battery to for Dewalt 18V/20V Lithium Battery DCB184/DCB181/DCB182/DCB200/DCB201 etc. : Tools & Home Improvement