Dyson V10 cordless vacuum review: Looks like a ray gun, isn't cheap, and is very good - HardwareZone.com.sg
Dyson dc 62 (v6) mod double battery and battery indicator - YouTube
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