Battery power for the PocketBeagle, really.

Has anyone successfully powered the PocketBeagle from a LiPo cell (3.7V nominal)?
According to the docs it is possible. Connect the LiPo to P2.14 (BAT+) and GND and that’s it - well, GND, too, obviously.
In my case, nothing happens, the PMIC doesn’t power up.
I also connected a mock NTC 10k resistor between P2.16 BAT_T, but no success.