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Battery from StoreDot can endure 1,000 super fast charging cycles

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Max McDee, 12 October 2022

Misc Battery

StoreDot is advancing its extreme fast charging (XFC) battery technology at a speed of light. The company has announced it concluded testing on the production-ready EV battery pack with its proprietary cell technology.

During the test, the XFC EV battery cells were charged from 10% SoC to 80% in just 10 minutes. Afterwards they were discharged back to 10% in 60 minutes. That process was repeated until battery degradation reached 80%. The results are more than promising.

It took over 1,000 charging cycles for the battery to degrade down to 80% - that’s a huge achievement for a production-ready battery cell. Since the StoreDot battery has energy density of 740 Wh/l (330 Wh/kg) it also enables greater range. Tesla’s 4680 battery cells offer between 272 and 296 Wh/kg and give Model Y LR a range of around 500 km. The same size battery from StoreDot, in theory, could go up to 650 km.

Well over 1,000 cycles before degradation reached 80 percent Well over 1,000 cycles before degradation reached 80 percent

And by maintaining over 80% of its original capacity after 1,000 charging cycles EV manufacturers could potentially offer 500,000 km warranty on battery packs.

500,000 km usability from a battery that charges in 10 minutes is an amazing achievement. And considering how unlikely it is that all of your charging will be done at those ultra-fast rates you can easily see how the battery will outlive any vehicle it's mounted on. Better still, it isn’t a prototype cell - this is a production-ready battery, good to go into electric cars from next year.

StoreDot calls the cells “100 in 5” referring to 100 miles range charged up in 5 minutes. The anode is silicon dominant (around 40%) and the cathode is the NMC - nickel, manganese and cobalt at 8-1-1 ratios. The company has been shipping its cells to global OEMs for evaluation since last month.

StoreDot evaluated production-ready battery cells StoreDot evaluated production-ready battery cells

StoreDot patented another interesting technology - self-regenerating battery cells. This new tech uses a background repair mechanism that allows the cells to regenerate while not being in use. This could potentially lead to even longer-lasting batteries.

This new technology is not that far away, StoreDot is working with its manufacturing partner EVE Energy to begin mass production of the new cells in 2024. The company has already announced it will further improve the XFC battery before the end of this year to bring the results closer to the 1,200 cycles previously achieved in the prototype cells.

10 minutes is close to how long it takes to refuel a gas-powered vehicle. 10 minutes to recharge an electric car means parity with fossil-fueled cars and end of range anxiety. With infrastructure in place, it will finally mean people won’t need to change their habits and EV adoption will accelerate further.

Source

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