Here's the
apparent source. 1%/minute from a "low-speed charger" is a step up from the many hours that it would take a L2 charger to do the job:
- F-150 Lightning battery nominally 131kWH
- 131kWH • 0.4 = 52kWH
- 40 min / 60 min = 0.667 hr
- 52 kWh / 0.667 hr = 78kW
Of course the ideal would have been 150kW
which would have delivered 65% in ~41 minutes (scroll to "How fast can the F-150 Lightning charge?"). The F-150 Lightning is 400V architecture so the ~350kW charging available to 800V architectures isn't an option.
Why it was providing ~half the potential power could be any number of reasons. While there could have been a defect, most likely a lack of optimization between charger and vehicle - a common reality whenever you're not charging a Tesla at a Tesla Supercharger
. The latter point is caused by a historic lack of cooperation between EV OEMs and charger manufacturers / operators, resulting in more cautious charging algorithms since technical data sharing seems to be sparse and validation generally involves volunteer vehicles as new models appear on the market.
But even moreso than smaller EVs, electric trucks aren't ideal for road-tripping due to their unavoidably greater energy consumption. Thus the target market of
commuters slow-charging at home or at work.
