- When it comes to charging, electric vehicles can vary widely in speed.
- Some can add hundreds of miles of range in an hour of charging.
- But other EVs may only be able to add half that in the same amount of time.
Slow charging can turn a quick charging pitstop into an agonizing wait.
To make things worse, it's not always clear what models might juice up faster than others, thanks to vague claims from automakers about battery capabilities.
Charging speeds can be affected by factors like the outside temperature, battery temperature, how many people are at a charging station, and any software settings meant to protect the battery's long-term health.
To account for these variables and give us a true head-to-head measure of charging speed, the experts at Edmunds used data from the firm P3 that monitored electricity use while an EV was connected to a level-3 fast charger. The dataset also included power-request communications between the vehicle and the charging station to track each battery's capacity.
Combined with Edmund's data on electricity-per-mile on different vehicles, the results give one of the first looks at charging speeds across automakers and models.
These are the 10 slowest-charging EVs of the 43 in Edmunds' test:
Edmunds tested miles per charging hour: 332
A few Ford F-150 Lightning models landed on the slowest-charging list. With a range of about 320 miles, it could take less than an hour to get back to 100%.
Edmunds tested miles per charging hour: 329
The Mustang Mach-E, which impressed Business Insider reviewers, has a solidly middle-of-the-pack range of just over 300 miles. This 2021 model had the fastest charging of a few Mach-E's to make the list.
Edmunds tested miles per charging hour: 319
The second F-150 Lightning to make the list charges about 13 miles of range per hour slower than the RWD Lariat on the list.
The ultra-fancy Platinum trim gets some added bells and whistles the Lariat lacks, like a moonroof, more speakers, and bigger wheels (which help with efficiency and range).
Edmunds tested miles per charging hour: 316
Both Rivian models in three trims made the bottom of Edmunds' list, with the larger-wheeled R1T truck charging the fastest.
Edmunds tested miles per charging hour: 315
Rivian's R1T truck has a massive battery pack to power its huge body and frame, and also helps it achieve a 300+ mile range.
Edmunds tested miles per charging hour: 294
All-wheel drive EVs tend to be less efficient than rear-wheel versions, and the AWD Mustang Mach-E is no exception.
Edmunds tested miles per charging hour: 257
The GT Performance version of the Mustang Mach-E charges the slowest of all options, Edmunds found.