Greater Bay Technology said in June 2023 that its Phoenix battery’s range would not be affected by hot or cold weather. That remains a company claim, not an independently demonstrated result: the available coverage does not provide an independent Phoenix-cell test protocol or results. The company also made claims about rapid warming and charging, but later AION V specifications do not establish that the vehicle uses Phoenix.
What did Greater Bay Technology claim about the Phoenix battery?
In a June 6, 2023 report, Engadget reported Greater Bay Technology’s claims for its Phoenix cell. The company’s co-founder and chairman, Huang Xiangdong, said: “It doesn’t matter if it’s a hot day or a cold day, the Phoenix battery’s range won’t be affected.” That statement describes the company’s assertion; it is not a verified finding.
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Engadget reported that Greater Bay said the cell could heat from −4°F to 77°F in five minutes and charge “within six minutes in all weather conditions.” It also reported a claimed range of 1,000 km (621 miles). These are figures and claims reported in 2023, not current independently confirmed specifications or proof of vehicle performance. The report said the company expected Phoenix to launch in Aion vehicles the following year; that was a forecast, not confirmation of deployment.
How much range do EVs lose in cold weather?
Cold can reduce an EV’s range and make longer trips more difficult. Cabin heating is one contributor because it draws energy from the vehicle. In its March 2023 report, the Associated Press described the issue and reported one driver’s experience: Mark Gendregske said his Kia EV6 typically had more than 20% degradation in range and charging time at 10–20°F, with range falling from about 250 miles to about 200. That is an individual account, not a controlled test or a fleet-wide estimate. Efficient heat pumps can reduce cold-weather range loss, but the AP report does not test or validate the Phoenix cell.
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Can an EV battery charge normally in the cold?
Cold-weather charging can also be slower, as the AP’s reporting and Gendregske’s account illustrate. Greater Bay’s “within six minutes in all weather conditions” statement was a company charging claim attributed to Huang and reported by Engadget in 2023. It should not be taken as a general promise that EVs can charge normally in cold weather, or as a result established by independent testing of Phoenix.
A 2017 paper, “Rapid restoration of electric vehicle battery performance while driving at cold temperatures,” reports a modeled example of a 49% cruise-range increase at −40°C under specified US06 drive-cycle conditions. That example concerns a different proposed strategy, not Phoenix, and cannot be used as evidence for Greater Bay’s claim.
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Does the later AION V announcement show Phoenix reached production?
No. In a July 2024 announcement, GAC said the Global New Version AION V had a claimed 750 km range and that its 400V+3C fast-charging system could add up to 370 km of range with a 15-minute charge. The announcement does not identify Phoenix as the vehicle’s battery, so those specifications do not confirm Phoenix fitment.
The GAC Group 2024 chronicle, published in a 2025 HKEX filing, discusses other battery technologies and future solid-state battery plans; it does not confirm Phoenix production fitment in the material reviewed. Whether Phoenix entered production vehicles therefore remains unverified by these sources.
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What would establish the Phoenix cold-weather claim?
A convincing comparison would need to distinguish a battery-cell claim from the range and charging behavior of a complete vehicle. Results are meaningful only when key conditions are disclosed and comparable:
- Battery chemistry and thermal-management system.
- Ambient temperature and the battery’s starting temperature.
- Whether the result measures driving range, charging speed, or both.
- Vehicle model and test cycle, with the procedure described.
- Independent verification, rather than an announcement or company forecast.
- Production availability, rather than a planned launch.
The reviewed coverage provides no independent Phoenix performance statistic or Phoenix test result. The claims may describe an intended capability, but the available evidence does not establish that Phoenix maintains range in the cold in real-world use.
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