nRF91 & LiFePO4 or dual Li/FeS2

[Lauri Jämsä]

Materials publicly available say the chip works from 3.1 volts.

But is this the absolute minimum voltage or will it be possible to use also LiFePO4 battery cells with the nRF91?

EDIT: Or what about with two non-rechargeable Li/FeS2 cells (1.5V each)?

Datasheet: data.energizer.com/.../l91.pdf

[ovrebekk]

Hi

What is the operating voltage range of those batteries?

Best regards