After two customers complained for overheating of electric vehicle charging adapters, Tesla Motors Inc. Will take back about 7,000 units of its product. This decision was made by the company since two reports of overheating and melting plastic on the plugs comes last months, and rarely used item is no longer sold through the company’s online store.

After two customers reported overheating in November, according to an email the company sent to customers Tuesday. No damage besides the melted plastic was reported, and Tesla said it has notified U.S. regulators of its voluntary recall. The accessories were manufactured by an outside supplier and haven’t been sold for at least six months, according to Tesla.

Customers should avoid use NEMA 14-30 adopters until the replacement is done

The two cases of overheating equipment involved the NEMA 14-30 adapters, which are sometimes used to charge Tesla vehicles via clothes-dryer appliance outlets in U.S. homes. International customers aren’t affected. Replacements will be shipped beginning in the next few weeks, and customers should avoid using them in the meantime.

The company will also be replacing the NEMA 10-30 and 6-50 adapters, which have a similar design. Those replacements will take about three months, but as there haven’t been any reported instances of overheating in those versions, customers who rely on them may continue to use them, according to the company.

“Although there have been no incidents with NEMA 10-30 or 6-50 adapters, they have some common elements with the NEMA 14-30, so we will be replacing those as well,” Tesla said. Tesla also said that these three adapters are, “used by relatively few of our customers.” The replacements will be sent out in the “next couple of weeks” for the 14-30 and “about three months” for the 10-30 and 6-50.

The recall is Tesla’s fifth since it began delivering the Model S to customers in June 2012, but the first of just an accessory. A year ago, in its biggest recall, the company recalled all 90,000 Model S cars on the road at the time because of a single report of a front seatbelt not being properly connected. In April, Tesla recalled less than 3,000 Model X SUVs because of problems with its third-row seats.