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,

Bolt, Bolt EUV, or the EV version of the Blazer, Silverado, or Equinox owners can now charge at Tesla superchargers. Plus how to snag a third-party adapter for less.

It is imperative that we receive all adapters affected to reduce the risk of potential vehicle damage,' Ford tells affected customers in an email.

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,

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.