Two week battle with a dead laptop battery, turned out to be firmware

Honestly, my Inspiron 15 from 2019 stopped charging out of nowhere. I swapped in a new $60 battery from Amazon, still nothing, then spent hours checking the charger and the DC jack with a multimeter. After 14 days of frustration, I found a Dell forum post about a BIOS update that fixes battery communication errors. Has anyone else had a firmware issue masquerade as a dead battery, or was it just my luck?

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