So much power is lost when fully charging EVs

Anyone who has charged an electric car from empty to fully charged will probably have noticed that it draws more current than the battery should be able to. AutoBest has now mapped out exactly how large this exceedance is for a series of EVs.

When charging electric cars, of course, not every kWh of electricity goes directly to the battery pack without loss in the meantime. There are often other things that require power, such as cooling the battery during charging, but also systems that adjust the recharging via software. Especially at high temperatures or with fast charging, cooling can cost quite a bit of extra power. So you always tap off a bit more kWh than is actually in the battery pack. AutoBest has completely discharged a number of EVs and then fully charged them again to discover exactly how much that is per car.

There appear to be significant differences. In some cases, this concerns more than 20 percent of electricity that did not end up directly in the battery pack. Then it can be quite disappointing if you had assumed a better return. AutoBest believes it is important for consumers to know. “There are technical explanations for this, but we think it’s important to know, because you may pay more than expected.”

AutoBest tested 15 popular relatively affordable ‘mainstream’ electric cars as part of the EcoChallenge and came to the following results. The Volkswagen ID3 uses the power most efficiently during charging, the Honda e the least.

Car Just. battery capacity charging consumption Difference
1. Volkswagen ID3 58 kWh 61.41 kWh 5.90%
2. Citroen ë-C4 45 kWh 50.13 kWh 11.40%
3. Kia e-Niro 64 kWh 71.51 kWh 11.70%
4. Cupra Born 58 kWh 64.58 kWh 11.80%
5. Opel Corsa e 45 kWh 50.40 kWh 12%
6. Peugeot e-2008 45 kWh 50.77 kWh 12.80%
7. Fiat 500e 37.3 kWh 42.24 kWh 13.20%
8. Peugeot e-208 45 kWh 50.93 kWh 13.20%
9. Hyundai Kona Electric 64 kWh 73.33 kWh 14.60%
10. Mazda MX-30 30 kWh 35.60 kWh 18.70%
11. Nissan Leaf 56 kWh 66.94 kWh 19.50%
12. Dacia Spring 26.8 kWh 32.41 kWh 20.90%
13. Renault Zoe 52 kWh 63.12 kWh 21.40%
14. Opel Mokka-e 45 kWh 54.66 kWh 21.50%
15. Honda e 28.5 kWh 36.23 kWh 27.10%

– Thanks for information from Autoweek.nl

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