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Monday, 13 September 2021 22:25

GM, LG Working Around the Clock on Bolt EV Battery Recall

Written by Mark Kane, Inside EVs

Index

...a year to produce 9+ GWh of new cells just to complete the recall. LG produced more than 33 GWh of batteries during the first seven months of this year---less than 5 GWh per month---at all its plants for all its customers, which means it's not easy to provide the additional 9 GWh quickly.

 

Meanwhile, the owners are asked to use only 60% of the available battery State of Charge (SOC) window (between about 30% and 90% SOC), which reduces the range from about 250 miles to 150 miles. Moreover, the cars should be kept outside.

 

According to Reuters' Factbox, one of the first reports of a battery-related fire in a Chevrolet Bolt EV comes from March 17, 2019, in a 2018 model year car in Belmont, MA. By Aug. 26, 2020, the number of reports increased to 12 and at the time five were confirmed as battery-related.

 

GM's formal investigation started in August 2020, while in October 2020 NHTSA’s Office of Defects Investigation opened a preliminary evaluation.


Initially, in November 2020, GM proposed a software fix that limited charging to 90% SOC. In April, the company decided to additionally perform a diagnostic procedure and replace batteries that would be considered defective.

 

After a few more fires of cars that were double checked, a full recall was announced in August.

 

We thank Inside EVs for reprint permission.

 

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