Can Heltec V3 be powered by LIFEPO4 battery?

Hi, I saw this specs sheet for Heltec V3 LoRa board. It shows it can be powered by 3.3V of power, which is within the range of a LIEFPO4 18650 battery. Has anyone tried powering it with one? Thanks!

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Response from Heltec’s tech support. The question was if Heltec LoRa can be powered by LIFEPO4 18650 cell.

“You can do this, but we don’t recommend it. Maybe some code won’t run at 3.3V and you’d better do some testing.”