The Cambridge start-up carried out its first road test with a EV prototype designed specifically for its innovative batteries. Charging times are more than half the shortest available on the market today
The ultra-fast charging battery architecture is compatible with the retrofit of EV
The first live demo confirmed expectations. Nyobolt’s ultra-fast charging battery took less than 5 minutes – 4 minutes and 37 seconds, to be precise – to move from 10 to 80%. Time that reduces by more than half the time of the fastest recharges available commercially today. Tesla, for example, stands for 15-20 minutes. And without triggering the typical lithium-ion battery degradation process. Performance is similar to the batteries of another start-up, StoreDot.
The performance of Nyobolt’s ultra-fast charging battery
The test took place on the test circuit of Bedford with a prototype of an electric car specifically designed for the ultrarapid volfram-anode charging battery of the British start-up, developed in conjunction with CALLUM. A 350 kW CC system was used for charging, which increased the vehicle’s range to 250 km. Already after the first 4 minutes, the charging allows a range of over 190 km, with the battery that has proven to support a peak current of 500 A. Charging times 0-100, in the lab, are around 6 minutes.
Unlike the fastest-charging batteries available today, for which “the charging profile will only maintain these peak charging levels for a short period of charging time,” Nyobolt’s low-impedance cells guarantee “to be able to offer sustainability, extending the battery’s useful life up to 600,000 miles,” says NYOBOLT’s co-founder and CEO, Sai Shivareddy.
A data, the latter, that comes from tests carried out in the laboratory. Nyobolt’s technology, in fact, would also reduce the levels of degradation that typically result from overfeeding lithium-ion batteries. The 24.5 Ah cells in the lab have completed over 4,000 DoD (Depth of Discharge) fast charging cycles, retaining over 80% of the initial battery capacity.
Another strong point that Nyobolt focuses heavily on in terms of marketing: the possibility of using its ultra-fast charging battery for the retrofit of existing electric cars. The battery module architecture of the start-up, in fact, would be compatible with other vehicles.
