TESLA CHARGING LOSSES EXPLAINED

EV Channels Review

This video provides a thorough explanation of EV charging losses, using a 2021 Tesla Model 3 and an Electrify America DC fast charger with a CHAdeMO adapter as a case study. The reviewer highlights that Tesla's in-car display, unlike some other EVs, does not show dispensed energy, leading to a common misconception among owners about charging efficiency. The experiment revealed approximately 10% charging loss when charging from 7% to 57% state of charge, translating to about 7 kWh lost over a full charge cycle. A significant portion of these losses, particularly at lower states of charge, is attributed to the vehicle's thermal management system, which can consume up to 12 kW to cool the battery. The reviewer also touches upon AC charging losses, noting higher percentages due to onboard charger conversion, and details the three main areas where DC fast charging losses occur: the charging station, the vehicle's thermal management, and battery inefficiency. While acknowledging that exact loss percentages vary, the video concludes that around 10% is a reasonable average for Tesla vehicles, with other EVs sometimes exhibiting higher losses.