Ford has advised its electric vehicle customers to stop using Tesla NACS adapters due to concerns that some units could cause slower charging speeds or damage the charging port. The automaker issued a bulletin warning of a “potential issue” with the adapters,

After offering its customers free NACS adapters for Tesla's Superchargers, Ford is telling its customers to stop using them, according to a service bulletin spotted by InsideEVs. The reason cited is a "potential issue" that could reduce charging speeds over time and even cause charging port damage,

Ford's EV customers gained access to Tesla's supercharger network using the adapters in February 2024, and many other EV manufacturers shortly followed.

The NACS adapter flaw was disclosed to affected EV owners earlier this week. Drivers who receive a notice should stop using their free NACS adapter immediately. Replacement adapters will be shipped the week of October 28th at no cost.

Last year, Tesla made news by opening up its Supercharger network to vehicles made by other manufacturers. Among the automakers involved in this was Ford, which has made some inroads in the electric space.