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Porsche Whistleblower: 60% of delivered Taycans have battery issues that can cause damage and fire

Updated: Mar 22, 2022

Whistleblower explained that the Taycan’s 800V high-voltage onboard charger used today does not control the charging process well enough and can overcharge some battery cells, causing them to overheat. For safety reasons, overheated battery cells are disabled and isolated from the battery pack, reducing battery capacity and thus the vehicle’s range. The problem occurs when the batteries are charged at a low AC speed of up to 7.5 KW, a common use case for all charging, such as at home or on low-speed chargers, the source said. (

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