US regulators are warning that the batteries placed into some refurbished Samsung Galaxy Note 4 smartphones are counterfeit and could overheat, posing a fire risk.

Those batteries are now being recalled, according to the US Consumer Product Safety Commission. The recall specifically involves about 10,200 batteries installed in refurbished Note 4 smartphones that were distributed as replacement handsets through AT&T's Insurance program between December 2016 and April 2017. The recall was initiated by FedEx Supply Chain, which installed the faulty batteries in the phones.

FedEx and Samsung "have determined that some of the recalled batteries are counterfeit and show anomalies that can lead the batteries to overheat," the US CPSC warned. "Consumers should immediately stop using the recalled battery and power down their smartphone."

The alert notes that FedEx has received "one report of a counterfeit battery overheating." On the plus side, there have been no reports of injuries or property damage.

It's safe to say that this is probably the last thing Samsung wants in the news ahead of its Galaxy Note 8 launch on August 23, considering the company is still working to earn back the public's trust following the exploding Galaxy Note 7 disaster. On the up side: this latest battery issue, unlike what happened with the Note 7, doesn't seem to be Samsung's fault. The US CPSC alert notes that the refurbished Note 4 batteries in question "were not supplied as original equipment by the phone's manufacturer, Samsung."

FedEx Supply Chain is contacting affected customers directly about this. The company will send those individuals a free replacement battery by mail, along with a postage paid box to return the faulty one. A green dot has been placed on the replacement batteries, so if you see that on the new one you should be good to go. If you believe you may be affected by this recall you can call FedEx Supply Chain at 800-338-0163 from 9 a.m. to 6 p.m. ET Monday through Friday or head here.

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