General Motors Co.
GM,
-0.64%

is recalling its all-electric Chevrolet Bolt for a second time because of a potential battery defect that can cause a fire.

GM said Friday that its investigation into recent battery fires involving the cars found that manufacturing defects in a certain battery cell were the root cause. It is asking owners of 2017-2019 model year Bolts to keep their electric-vehicle charges at a certain level and to park the cars outside after charging them.

Under the previous recall, initiated in November, owners of 69,000 Bolts were advised to get a software update that would monitor the condition of the lithium-ion battery and flag any potential problems. Customers began receiving those software updates in the spring, a GM spokesman said.

GM has since learned that at least one battery fire occurred in a vehicle that had received the software update, the spokesman said. The company is aware of eight fires total and two related injuries but no deaths, he said.

An expanded version of this article appears on WSJ.com.

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