A battery capable of running 621 miles (about 1,000 kilometers) on a single charge was just unveiled by Gotion High Tech, a Chinese battery start-up company, at its annual technology conference in Hefei, Anhui Province.

Its new L600 Astroinno Lithium Manganese Iron Phosphate (LMFP) battery will be released next year. The new Astroinno package has already passed all the necessary security tests and can potentially last up to 4000 charge-discharge cycleswhich equates to approximately 2.4 million miles (4 million kilometers) over the average life of a car.

Ten years of research and development

According to The Independent, the company spent ten years developing the cells in-house to make them commercially viable and thus overcome the previous problems of this type of battery, which suffered from low conductivity, low packing density and high temperature dissolution of manganese. which made them too inefficient and heavy to use on our EVs.

Gotion, headquartered in Fremont, California, says that with the help of new electrolyte additives, co-deposition, doping encapsulation and a new granulation technology, the L600 Astroinno battery no longer suffers from high-temperature manganese leaching problems.

How does it work?

The battery is wrapped in a sandwich structure with liquid cooling on both sides and a minimalist design approach that reduces the number of structural parts by 45% and the weight of structural components by 32% compared to previous versions.

“The Astroinno L600 LMFP cell achieves a gravimetric energy density of 240 Wh/kg and a volumetric energy density of 525 Wh/l. It can reach more than 4000 working hours. It can achieve more than 4000 cycles at room temperature and 1800 cycles at high temperature, easily achieves 18-minute fast charging and passes all safety tests. Thanks to the high energy density of the Astroinno battery, we can also achieve a range of 1,000 km without using NCM material.”said Chen Qian, Executive Chairman of Gotion Global.

In comparison, Amprius silicon-anode lithium-ion cells have an energy density of 450 Wh/kg, while Tesla’s Type 4860 cells, which use a graphite anode, offer an estimated energy density of 272 to 296 Wh/kg.

Volkswagen is already one of Gotion’s customers, but the Chinese battery maker did not reveal which car will be the first to receive the new L600 cells. Similarly, manufacturer Astroinno plans to build a $2.3 billion battery plant in Green Charter, Michigan.

It remains to be seen how this will be characterized in an electric vehicle and in real conditions of use. Claiming that a battery can provide 1,000 km of autonomy without knowing the very components of the car in which it will be installed (air penetration coefficient, weight, power, etc.) seems very ambitious today.