Nissan has modified the software 2018 Leaf battery 40 kWh: fast charging is faster

Good news for Nissan Leaf owners with battery 40 kWh currently, Nissan offers a software update for models Leaf with a battery of 40 kWh, to fix a significant reduction in power charging constant current, which occurred when the so-called #Rapidgate.

Many drivers found that the first generation Leaf they can make long trips much faster than the model 2018 because of the speed of charging.

“Rapidgate” refers to the problem that Nissan Leaf 2018 with a battery of 40 kWh, with two or more consecutive rapid chargers DC there was a decrease in the charging rate of the second and subsequent charges. This charge regulation was specifically developed software Nissan to prevent excessive heating of the battery by repeated charging constant current high power.

Battery Nissan Leaf 2018 40 kWh © nissannews.com

Obviously, your daily commute is not a problem. But when moving long distances it can significantly slow down your journey.

It was a deliberate decision by Nissan to protect the battery from rapid degradation due to overheating. After reports of problems with fast charging, Nissan has released a statement:

Nissan Leaf in 2018, provided precautions when charging to protect the battery during repeated sessions of fast charging in a short period of time. Although precautions can increase the charging time after a few sessions of fast charging, they are important to maintain life of the battery over a long period of time.

It was a compromise to have the opportunity to offer a larger battery pack without changing its size.

Many owners were disappointed that Nissan has not notified owners of the electric car on such a “decrease in the speed of charging” to buy.
We will remind, on this soil of Britain, the scandal that information about the charging rate of the battery is the electric vehicle does not correspond to reality and, subsequently, the Committee of advertising standards in Britain has banned the advertisement of Nissan Leaf in the country.

Now, a Nissan spokesman in Germany said Electrive that they will offer for all models of the Leaf, produced at a plant in Sunderland in the period from 8 December 2017 9 may 2018 update software. Electric cars with a later production date already installed the current version of the software.

Bjorn Nylund spent more than a full test and get reliable data that confirms that the new software has really changed the behaviour of the charge control. It should be noted that the test Bjorn was carried out in the Norwegian winter when ambient temperature is from 0° to -10°C, but its data show a very significant improvement compared to previous results in identical conditions.

Bjorn Nylund compares the charging curves before and after software updates © Bjørn Nyland YouTube

Take some time to understand let the software to ensure the same rate of acceleration charging in a warmer environment.

It is obvious that the new software leads to a higher temperature of the battery pack, and while Nissan is no explanation about how this will affect (or not affect) the durability of the battery. Since Nissan will honor the same warranty on the batteries, we can conclude that they are at least assured that the durability will not be a significant problem.

Now discussion about the need for active air or liquid cooling of the traction batteries in electric vehicles is gaining momentum. Many fans were expecting the upcoming Leaf e+ with battery 62 kWh will get liquid cooling but he didn’t get it. And most interestingly, Nissan says the peak power charging up to 100 kW, which means that overheating will also be provided without active liquid cooling, and do not wait for fate #rapidgate new Leaf 2019?

Battery Nissan Leaf e+ 62 kW⋅h (left) and Nissan Leaf 40 kW⋅h (right) © nissannews.com

I hope that the engineers at Nissan was careful about that, and the modules and cells in the new electric car Packed and assembled differently, because there were modules with 12, 21 and 27, with cells and a volume energy density increased by 25%.

Recall that the Nissan Leaf, whose sales exceed 380 000 copies worldwide, remains the best-selling electric vehicle of all time.

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