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BQ40Z50-R1: SoH at 0%

Part Number: BQ40Z50-R1
Other Parts Discussed in Thread: BQSTUDIO

Hello,

On some battery pack received in production, the SoH is equal to 0%. These batteries have never been used during at least 6 month (only stored in good conditions in production line). Once plugged on our industrial charger the charge is not possible because of the overcharge protection. The pack is made of 3 lion cells in serie (10,8V typical) but even at 9,5V the fuel gauge give a SoC @100% and a ASOC @ 0%.

Here attached a screenshot of the summary  of 2 battery pack with this issue.