Dyson vacuum with Milwaukee battery hack. "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should." : r/MilwaukeeTool
Handheld Vacuum Cleaner Replacement Lithium Battery Converter 21.6V 8000mAh For Dyson V6 V7 V8 Absolute Animal Motor Head - AliExpress
Amazon.com: JJXNDO V8 Battery Adapter for Dewalt 20V Lithium Battery Converted to Replace for Dyson V8 Battery, Works with Dyson V8 Series Animal Absolute Vacuum Cleaner(DW20V8 Adapter ONLY) : Home & Kitchen