It emerged final Dec that McLaren had built an all-electric testbed for a destiny EV supercar, to go along with a English automaker’s $1.4 billion investment in electrified powertrains. But as we told we a few weeks ago, McLaren CEO Mike Flewitt pronounced that such a automobile was, as a unsentimental matter, years divided from production. Now COO Jens Ludmann has put some numbers to a carmaker’s quest, saying, “[The] Senna has 800 PS [Pferdestärke] on 1,200 kg, that’s about a appetite to weight that we’re looking for.” He’s articulate about 789 horsepower in a package lighter than a bottom Honda Civic Coupe.
The emanate isn’t appetite capacity, it’s appetite density. Said Ludmann, “[The] battery record should grasp 500 watt-hours per kilogram. That is a turn where it unequivocally creates sense. Today we are around 180 watt-hours per kilogram.” McLaren Engineering provides batteries for Formula E rated during 216 Wh/kg, though those packs aren’t suitable for a consumer highway car. According to what a company’s schooled from a battery industry, we’re 5 to 10 years divided from 500 watt-hours per kilogram for a roadworthy vehicle.
In 2015 Rimac unveiled a battery it made for a Koenigsegg Regera. Said to be a many energy-dense automobile battery during a time, it boasted a power-to-weigh ratio of 60 Wh/kg. Figure that a battery industry’s adding 40 Wh/kg per year — that gets us from 2015 to Ludmann’s 180 Wh/kg stream state of affairs. Using that measure, we’re 8-10 years divided from 500 Wh.
McLaren wants a fanciful EV owner to be means to do 30 mins or 10 tough laps during a track, be “as sparkling as a 675LT,” and recharge in 30 mins for another half-hour lane session. That battery would need unusually high appetite density, and a cells and wiring would need to mount adult to consistent high appetite outlay and impassioned liberate cycles. To capacitate that with today’s battery tech, you’d finish adult with a automobile that could do 500 miles in bland highway use, be distant too complicated for McLaren’s aims, and take distant too prolonged to charge.
Ludmann told Wheels repository all else about a EV supercar is “all resolved — easy.” While we puncture in for what could be a extensive wait, we’ll have to be confident with a McLaren variety that should start display adult in a integrate of years.