AIO - data needs?

[MEOffGrid]

Hi -

Installing an AIO and two MNPowerflo16 batteries in an off-grid environment with a generator.

We're considering a small data allowance T-Mobile MIFI internet solution connected via Ethernet cord to the AIO.

?: 1. How much data does AIO use in a typical month?  are we talking MegaBytes?
?: 2. How big are the average firmware updates if needed


I'm guessing the data usage is pretty small, but I wanted to confirm.

Thanks,
C