Formula E's 'Fanboost' concept will be expanded for the all-electric championship's fifth season, giving more drivers an in-race power boost following a fan vote.

Fanboost has been a unique concept used by Formula E since its inaugural race in 2014 where fans vote for their favourite drivers, with the top three gaining a short power boost during a race they can use.

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Fanboost has largely divided fans, and even attracted criticism from some drivers, but will be expanded for the new Formula E campaign that starts in Saudi Arabia next week.

As approved by the World Motor Sport Council in St. Petersburg on Wednesday, five drivers will now receive Fanboost in races. The vote will close after the race has begun, and will be available during the second half of the race.

The FIA also confirmed details on the new 'Attack Mode' specific to each circuit - namely how long it can be used for - must only be given to drivers at least one hour before the start of the race.

Finally, the WMSC also approved the use of biometric gloves in Formula E following their successful introduction to Formula 1 in 2018.

The 2018-19 Formula E season begins with the Ad Diriyah E-Prix on December 15.