One reviewer says their vacuum now runs “almost twice as long” thanks to this simple upgrade.

The notice prompted Chief Financial Officer and the State Fire Marshal Jimmy Patronis to warn consumers against purchasing Amazon’s lithium-ion replacement battery packs for Dyson vacuum cleaners.

Dyson is firmly of the view that we need to do less of this cleaning nonsense. “Our future vision is of a home that can look after itself,” says Dyson’s chief technology officer John Churchill. “Our ...