Sunday 23 September 2018 5:19 pm

Dyson writes off £46m on battery developer Sakti 3

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  Vacuum cleaner manufacturer Dyson has written off £46m on US battery developer Sakti 3. 

Dyson Technology bought the company, which is a spin-off from the University of Michigan, for $90m (£58m at the time) in 2015 as part of its strategy to develop an electric car. 


Read more: Dyson plugs £200m into driverless cars UK technology campus

Accounts for the year to December 2017 show that the company undertook a review into the investment and recorded an impairment charge.

Sakti 3 is developing "solid-state" batteries which use solid lithium electrodes rather than flammable liquid which it says will make them safer and more powerful.

"During the year, management have undertaken an impairment review of the group's investment in Sakti 3 and have subsequently taken an impairment charge to the P&L [profit and loss statement]," the accounts said.

The company has recently invested £200m in redeveloping a Wiltshire airfield into a research centre for electric cars and driverless technology as it aims to launch its first electric car model by 2021. 

Announcing the latest investment in August Dyson's chief executive Jim Rowan said: "He added the team is now “firmly focused on the next stage of our automotive project strengthening our credentials as a global research and development organisation”.

Dyson has been contacted for comment. 


Read more: Dyson is working on an electric car

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