the new batteries would improve the charging capacity of the Model Y

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The new generation of Tesla batteries is finally arriving on the Model Y. The opportunity is offered to get a glimpse of its capabilities.

The delivery of the new Model Ys has begun and these, if they look like two drops of water to their predecessors, have the particularity of carrying Tesla’s new battery cells, the aptly named 4680. The first owners of Model Y equipped with the new generation of battery were therefore able to have a glimpse of the slightly improved charging capacities of their car.

Indeed, this new type of cell unveiled during Battery Day 2020 inaugurates a new manufacturing process and, to be honest, a very different architecture in the composition of the battery. The 4680 (46mm in diameter, 80mm in height) eliminates the existence of the traditional interlayer film which separated each layer of electrodes in the cells. By dispensing with this insulation which has become superfluous, the cell can carry a greater number of electrodes. As for the electrons, they can also move faster insofar as they no longer need to bypass the separation film. Result: according to Tesla, its new battery gives it 16% more autonomy, but also six times more power.

A peak at 250 kW

However, there remained an unknown factor, that of the recharging capacity of these batteries. According to the feedback from the first beneficiaries, this one is very good. Thus, the owner of the Twitter account The Kilowatts tried a charging session of a new Model Y on a Supercharger. Arriving with 0% battery, the Model Y recovered 80% of its capacity in 32 minutes. But the most interesting is probably in the detail of the figures. At the start of charging, the Model Y rose to a peak of 250 kW, that is to say a particularly high value. Indeed, for comparison, the most efficient models on this point currently are the two cousins ​​of the Hyundai / kia group, the Ioniq 5 and the EV6 which accept up to 239 kW in fast charge.

Although this peak only lasted a few minutes and the rest of the charge happened at more common levels (less than 150 kW from 25% battery), the fact remains that the new 4680 cells also seem to perform better on this point. Of course, these tests will have to be confirmed over time, a charging session being subject to both the vagaries of the terminal and those of the vehicle. As for the 4680 cells, their career is just beginning. They are called upon to equip the future Semis of the Californian brand and especially its pick-up, the Cybertruck.

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